Tornado outbreak sequence of May 15–20, 2017 explained

Tornado outbreak sequence of May 15–20, 2017
Tornadoes:134
Fujitascale:EF3
Enhanced:yes
Tornado Duration:5 days, 1 hour and 1 minute
Total Fatalities:2 fatalities, 39 injuries
Damages:$975 million[1]
Hail:4.5inches in diameter near Santa Anna, Texas, on May 19
Sustained Wind:Tornadic – 165mph
(near Great Bend, Kansas on May 16)
Non-tornadic – 104mph
(near Walters, Oklahoma on May 19)
Partof:tornado outbreaks of 2017

A prolonged period of intense tornado activity affected the Great Plains, Great Lakes, and Ohio Valley during May 15–20, 2017. This outbreak sequence was the most prolific tornado event of 2017 in terms of number of tornadoes. It is also notable for producing the longest-tracked tornado in Wisconsin state history: an intense EF3 tornado that remained on the ground for over 82miles and killed one person while causing major damage near Chetek and Conrath. Overall, the outbreak sequence resulted in two deaths and several injuries.

Outbreak summary

On May 15, a severe weather outbreak struck areas from Northern Illinois to Texas. One EF0 tornado was reported in Iowa along with minor tree damage associated with the tornado. Numerous reports of strong winds and large hail along with some significant hail and wind was reported on May 15.[2] On May 16, a widespread severe weather event impacted a line from Wisconsin to Texas according to storm reports. Many tornadoes, including some long tracked tornadoes, were reported in Texas, Oklahoma, and Kansas. An EF3 tornado which touched down near Reeve, Wisconsin caused one fatality and 25 injuries along its 83miles long track, making it the longest tracked on record in Wisconsin and the first killer tornado in the state since 2011. Extensive damage occurred in a mobile home park near Chetek, where the fatality occurred, and EF3 strength damage occurred to a poorly-built home near Conrath, which was leveled.[3] A large, high-end EF2 tornado also struck the southern fringes of Elk City, Oklahoma, killing one person and causing major damage. An EF3 tornado also damaged houses in Pawnee Rock, Kansas, and completely destroyed farm homes near Great Bend, injuring one person. Hail up to 4inches in diameter and straight-line winds up to 85mph were also reported on May 16.[4] On May 17, individual storm cells began to pop up along a line from Minnesota to Nebraska. The individual storm cells generated a few tornadoes in Iowa, Nebraska, and Minnesota before converging into a squall line. The squall line continued to produce winds of up to 89mph in parts of Wisconsin, Iowa, and Illinois before weakening below severe limits. An EF2 tornado embedded in the squall line ripped the roof off of a house and injured one person near Galva, Illinois.[5]

On May 18, a high risk of severe thunderstorms was issued for south-central Kansas and northwestern Oklahoma. The Storm Prediction Center stated that several intense and long-tracked tornadoes, along with hurricane-force winds and hail up to 4 inches in diameter were likely in the high risk area. Also, a 30% risk of tornadoes including significant tornados was issued in the high risk area. In the early afternoon, a line of intense supercells with baseball size hail fired along the dry line near the Texas and Oklahoma panhandle border. A few of these supercells went on to produce multiple scattered, short-lived tornadoes across three different states. Most were weak, though an EF2 tornado crumpled several metal power line truss towers near Haynesville, Texas. Later in the afternoon when the most intense severe weather was forecast to occur, a stationary front set up in northern Kansas lowering temperatures in most of the moderate and high risk areas. This led to insufficient instability and limited the severe weather in southern central Kansas and West central Oklahoma to smaller hail and winds. However, this also created a large plume of heavy precipitation that caused some flash flooding. In addition, the supercell thunderstorms that formed during this event initiated in the early afternoon, well before the best kinematics for tornado development had arrived. Later in the evening, the tornado threat was limited to central Texas and eastern Oklahoma. A large, slow moving high precipitation supercell with softball sized hail set up near Cross Plains, Texas. This storm was tornado warned for over an hour and produced many funnel clouds along with a couple of weak tornadoes. The main threat with this storm however was the flash flooding as it dumped close to 8inches of rain in localized areas due to its very heavy rain and slow movement. A squall line progressed through eastern Oklahoma and Kansas overnight, producing many embedded tornadoes, two of which reached EF2 intensity. One of these EF2 tornadoes struck Muskogee, Oklahoma, causing severe damage to trees, apartment buildings, and industrial buildings. A separate EF1 tornado impacted the western part of Muskogee as well, causing damage to homes and businesses, and downing many trees. The squall line continued into Friday morning, eventually making its way to parts of Arkansas and Missouri, producing numerous additional weak tornadoes. Other storms in states further to the west also produced many EF0 and EF1 tornadoes. On May 20, the severe weather threat generally was limited. However, a few weak tornadoes were spawned in Indiana as plentiful helicity and the presence of a warm front aided the development of tornadoes. Overall, this outbreak sequence produced 134 tornadoes.[6]

Confirmed tornadoes

May 15 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EF0W of CalmarWinneshiekIA23:45–23:470.98abbr=onNaNabbr=on50abbr=onNaNabbr=onSurveyors found a broken line of tree damage.[7]

May 16 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EF0NE of BalkoBeaverOK19:45–19:460.09abbr=onNaNabbr=on25abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[8]
bgcolor=# EF0NW of WakaHansfordTX20:04–20:050.09abbr=onNaNabbr=on25abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[9]
bgcolor=# EF0SSW of McLeanDonleyTX21:39–21:501.39abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[10]
bgcolor=# EF3WNW of Reeve to N of Chetek to WSW of OgemaPolk, Barron, Rusk, PriceWI21:42–00:1082.53abbr=onNaNabbr=on1320abbr=onNaNabbr=on1 death  - See section on this tornado – There were 25 injuries.[11] [12] [13] [14]
bgcolor=# EF0NE of ExeterFillmoreNE21:43–21:521.83abbr=onNaNabbr=on35abbr=onNaNabbr=onA trained storm spotter observed a landspout tornado. An auger was turned over and some tin was removed from a roof.[15]
bgcolor=# EF0E of McLeanWheelerTX21:53–21:540.06abbr=onNaNabbr=on25abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[16]
bgcolor=# EF1NNW of ShamrockWheelerTX22:16–22:170.09abbr=onNaNabbr=on25abbr=onNaNabbr=onA power line and trees were damaged.[17]
bgcolor=# EF2SE of WheelerWheelerTX22:25–22:449.18abbr=onNaNabbr=on1250abbr=onNaNabbr=onLarge rain-wrapped wedge tornado. A double-wide mobile home was completely destroyed, with its debris scattered hundreds of yards downwind. Several other structures were damaged, a large number of power poles were snapped off at the base, and numerous trees were snapped or uprooted. A cotton stripper was overturned, and a truck was tossed nearly 200abbr=offNaNabbr=off. Oil equipment and holding tanks were damaged as well.[18]
bgcolor=# EF0ESE of AberdeenCollingsworthTX22:45–22:460.29abbr=onNaNabbr=on25abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[19]
bgcolor=# EF1SE of MinneolaClarkKS22:49–22:584.03abbr=onNaNabbr=on50abbr=onNaNabbr=onA narrow tornado rolled an RV camper at a storage lot, destroyed an old pole barn, ripped an exterior wall off of a small abandoned house, and tore roof panels off a metal outbuilding.[20]
bgcolor=# EF0E of LutieCollingsworthTX22:50–22:512.26abbr=onNaNabbr=on25abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[21]
bgcolor=# EFUS of ErickBeckhamOK23:08–23:111abbr=onNaNabbr=on20abbr=onNaNabbr=onThe Erick Fire Department, and storm chasers, observed a tornado.[22]
bgcolor=# EF2SSE of Reydon to WNW of CheyenneRoger MillsOK23:18–23:3010.25abbr=onNaNabbr=on150abbr=onNaNabbr=onThis tornado snapped numerous power poles, tore the roof off of a small hotel and a barn, and uprooted trees. A 16-foot grain feeder that was full of grain was overturned.[23]
bgcolor=# EFUSSE of ErickBeckhamOK23:23–23:251.13abbr=onNaNabbr=on50abbr=onNaNabbr=onAn NWS employee observed a tornado.[24]
bgcolor=# EF0WSW of BrandonPerkinsNE23:36–23:370.1abbr=onNaNabbr=on20abbr=onNaNabbr=onA brief tornado was observed but caused no damage.[25]
bgcolor=# EF1NNW of Strong CityRoger MillsOK23:45–23:460.75abbr=onNaNabbr=on50abbr=onNaNabbr=onA tree was blown over and a water tank was damaged at a well site.[26]
bgcolor=# EF2WNW of Carter to Southern Elk City to WSW of CanuteBeckham, WashitaOK23:46–00:1818abbr=onNaNabbr=on1000abbr=onNaNabbr=on1 death  - This rain-wrapped wedge tornado caused very high-end EF2 damage as it impacted the southern fringes of Elk City. Many homes at the Elk City Golf & County Club had their roofs ripped off and sustained collapse of some exterior walls. One small home collapsed, and several metal industrial buildings were heavily damaged or destroyed. Numerous vehicles were flipped and tossed, and one man was killed as his pickup truck was thrown 150 yards from a roadway and mangled. Elsewhere along the path, an oil derrick was toppled, several other homes sustained heavy damage, outbuildings were damaged or destroyed, and an irrigation pivot was overturned. Many trees and power poles were snapped along the path. 66 homes were destroyed, while 140 others were damaged. Three businesses were destroyed, and five others were damaged as well. 10 people were injured.[27] [28]
bgcolor=# EF3E of Larned to NW of HoisingtonPawnee, BartonKS00:59–01:4126.64abbr=onNaNabbr=on300abbr=onNaNabbr=onThis strong tornado struck the town of Pawnee Rock, where a school building sustained considerable damage, trees were snapped, and homes had their roofs ripped off. High-end EF3 damage occurred to the west of Great Bend, where trees were denuded and debarked, a block-foundation farmhouse was completely leveled, and another farmhouse was left with only one corner standing. Several other homes were severely damaged along the path, some sustaining roof and exterior wall loss. Outbuildings were damaged or destroyed, and irrigation pivots were damaged as well. One person was injured.[29] [30]
bgcolor=# EF0NNE of ParrishOneidaWI01:12–01:130.33abbr=onNaNabbr=on175abbr=onNaNabbr=onSeveral hundred pine trees were uprooted by this brief tornado.[31]
bgcolor=# EF0NNE of SusankBartonKS01:48–01:500.34abbr=onNaNabbr=on75abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[32]

May 17 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EF1NE of EdgarClayNE06:24–06:292.19abbr=onNaNabbr=on50abbr=onNaNabbr=onTwo farmsteads received damage to their outbuildings and trees. A few center irrigation pivots were also damaged, and tin was lofted into trees.[33]
bgcolor=# EF0NE of AltonSiouxIA19:10–19:120.02abbr=onNaNabbr=on10abbr=onNaNabbr=onA trained spotter reported a brief touchdown. No damage occurred.[34]
bgcolor=# EF0W of MatlockSiouxIA19:42–19:440.02abbr=onNaNabbr=on10abbr=onNaNabbr=onTornado reported by a storm chaser. No damage occurred.[35]
bgcolor=# EF1WNW of WisnerCumingNE20:48–20:500.37abbr=onNaNabbr=on50abbr=onNaNabbr=onA brief tornado damaged crops and destroyed outbuildings. One home sustained minor damage and had one exterior wall bowed out.[36]
bgcolor=# EF0PlainviewWabashaMN21:29–21:300.79abbr=onNaNabbr=on30abbr=onNaNabbr=onIsolated spots of minor damage occurred in town. The back side of a metal shed was blown down, part of roof was blown off of a storage building, and the batting cage at a baseball field was destroyed.[37]
bgcolor=# EF1W of Pleasant PlainJefferson, WashingtonIA22:16–22:203.22abbr=onNaNabbr=on25abbr=onNaNabbr=onA small and fast-moving high-end EF1 tornado damaged outbuildings and trees. One outbuilding was completely destroyed with debris strewn downwind.[38] [39]
bgcolor=# EF1W of North BendTrempealeauWI22:21–22:251.06abbr=onNaNabbr=on250abbr=onNaNabbr=onA brief tornado snapped trees and damaged farm buildings.[40]
bgcolor=# EF0WSW of Illinois CityRock IslandIL23:04–23:050.71abbr=onNaNabbr=on25abbr=onNaNabbr=onA storm chaser videoed a brief tornado in an open field. No damage occurred.[41]
bgcolor=# EF0NE of RidgewayWinneshiekIA23:50–23:510.2abbr=onNaNabbr=on30abbr=onNaNabbr=onA brief tornado damaged trees.[42]
bgcolor=# EF0ElginWabashaMN00:35–00:360.26abbr=onNaNabbr=on30abbr=onNaNabbr=onA brief tornado caused minor roof shingle and tree damage in Elgin.[43]
bgcolor=# EF1NE of WashingtonWashingtonIA00:36–00:425.95abbr=onNaNabbr=on40abbr=onNaNabbr=onA small, fast-moving tornado damaged or destroyed numerous outbuildings. Trees were snapped, power lines were downed, and a house had its windows blown out.[44]
bgcolor=# EF1NW of DonahueScottIA01:44–01:462.14abbr=onNaNabbr=on25abbr=onNaNabbr=onNumerous trees were damaged, including a few rotten trees that were snapped. A home and a garage sustained roof damage.[45]
bgcolor=# EF1SE of SherrardMercer, HenryIL02:00–02:098.11abbr=onNaNabbr=on150abbr=onNaNabbr=onNumerous outbuildings, a few homes, and over 50 trees sustained damage. One home had partial roof loss, and debris was speared through the walls of another home.[46] [47]
bgcolor=# EF1WNW of HooppoleHenryIL02:44–02:472.06abbr=onNaNabbr=on50abbr=onNaNabbr=onDamage was primarily confined to snapped branches and uprooted trees, though one outbuilding suffered roof damage.[48]
bgcolor=# EF2SSW of GalvaHenryIL03:20–03:211.29abbr=onNaNabbr=on50abbr=onNaNabbr=onA small multiple-vortex tornado tore the roof off a home and blew out the structures doors, injuring one inside. Multiple trees and another home were also damaged.[49]
bgcolor=# EF1S of Poplar Grove to NW of HarvardBoone, McHenryIL03:21–03:3410.3abbr=onNaNabbr=on100abbr=onNaNabbr=onA large outbuilding was destroyed and others were damaged. Numerous trees were snapped and uprooted, and a garage collapsed.[50] [51]

May 18 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EFUNW of DukeJacksonOK19:02–19:050.7abbr=onNaNabbr=on50abbr=onNaNabbr=onA brief tornado was reported by local media. No damage occurred.[52]
bgcolor=# EF0N of DukeJacksonOK19:11–19:161.2abbr=onNaNabbr=on75abbr=onNaNabbr=onLarge cone tornado remained mainly over open country, though one house sustained light damage.[53]
bgcolor=# EFUNE of DelhiOteroCO20:29–20:362.88abbr=onNaNabbr=on75abbr=onNaNabbr=onStorm chasers and an off-duty NWS employee observed a tornado which caused no damage.[54]
bgcolor=# EFUNNW of Cloud ChiefWashitaOK20:40–20:410.5abbr=onNaNabbr=on100abbr=onNaNabbr=onTornado remained over open country and caused no damage.[55]
bgcolor=# EF0S of SewardStaffordKS21:03–21:040.58abbr=onNaNabbr=on50abbr=onNaNabbr=onWeak, brief tornado remained over open country and caused no damage.[56]
bgcolor=# EFUS of VernonWilbargerTX21:040.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[57]
bgcolor=# EFUWSW of SeilingDeweyOK21:110.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[58]
bgcolor=# EF0NW of BloomFordKS21:14–21:180.49abbr=onNaNabbr=on50abbr=onNaNabbr=onLandspout tornado remained over open country and caused no damage.[59]
bgcolor=# EF0S of WilroadsFordKS21:18–21:210.35abbr=onNaNabbr=on50abbr=onNaNabbr=onLandspout tornado developed as the previous one was dissipating. No damage occurred.[60]
bgcolor=# EFUSE of WeatherfordCusterOK21:200.2abbr=onNaNabbr=on30abbr=onNaNabbr=onTornado remained over open country and caused no damage.[61]
bgcolor=# EF0NW of ChesterWoodward, MajorOK21:23–21:368.6abbr=onNaNabbr=on200abbr=onNaNabbr=onLarge multiple-vortex tornado caused roof and siding damage to two homes. Tree damage also occurred.[62] [63]
bgcolor=# EF0E of Great Bend Municipal AirportBartonKS21:30–21:310.11abbr=onNaNabbr=on50abbr=onNaNabbr=onA brief tornado touched down over open fields. No damage occurred.[64]
bgcolor=# EF0SW of GreenfieldBlaineOK21:330.2abbr=onNaNabbr=on50abbr=onNaNabbr=onAn outbuilding and the roof of a house were damaged.[65]
bgcolor=# EF0NNE of SewardStaffordKS21:33–21:340.56abbr=onNaNabbr=on50abbr=onNaNabbr=onWeak, brief tornado remained over open country and caused no damage.[66]
bgcolor=# EFUN of ChesterMajorOK21:370.2abbr=onNaNabbr=on30abbr=onNaNabbr=onA brief tornado was reported by local media. No damage occurred.[67]
bgcolor=# EFUSW of CornWashitaOK21:400.3abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[68]
bgcolor=# EFUNNW of HaynesvilleWichitaTX21:48–21:501.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[69]
bgcolor=# EF1WSW of WaynokaMajor, WoodsOK21:49–22:079abbr=onNaNabbr=on200abbr=onNaNabbr=onTornado mainly moved over rural areas, though the roof of a barn was damaged at one location.[70] [71]
bgcolor=# EF2NNW of HaynesvilleWichitaTX21:54–21:582abbr=onNaNabbr=on100abbr=onNaNabbr=onTornado damaged several metal power line truss towers, a few of which completely collapsed.[72]
bgcolor=# EFUNW of AlvaWoodsOK21:570.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[73]
bgcolor=# EF0ESE of GreenfieldCanadian, BlaineOK22:05–22:103.42abbr=onNaNabbr=on50abbr=onNaNabbr=onHomes sustained roof, siding, and shingle damage. A power pole was broken and an irrigation pivot was overturned. Two barns also sustained damage.[74] [75]
bgcolor=# EF0N of Great Bend Municipal AirportBartonKS22:23–22:240.21abbr=onNaNabbr=on50abbr=onNaNabbr=onA brief tornado touched down over open fields. No damage occurred.[76]
bgcolor=# EF0NE of Great Bend Municipal AirportBartonKS22:49–22:510.62abbr=onNaNabbr=on50abbr=onNaNabbr=onA brief tornado touched down over open fields. No damage occurred.[77]
bgcolor=# EF0SE of Alta VistaWabaunseeKS22:520.01abbr=onNaNabbr=on25abbr=onNaNabbr=onA brief tornado touched down over an open field. No damage occurred.[78]
bgcolor=# EF0W of Salina Regional AirportSalineKS23:31–23:330.34abbr=onNaNabbr=on50abbr=onNaNabbr=onA rain-wrapped tornado remained over open fields. No damage occurred.[79]
bgcolor=# EF0W of DuncanStephensOK00:000.2abbr=onNaNabbr=on50abbr=onNaNabbr=onAn outbuilding and some trees were damaged.[80]
bgcolor=# EF1SE of Cross PlainsBrownTX00:41–00:553.3abbr=onNaNabbr=on450abbr=onNaNabbr=onA home had roof decking lifted off, small sheds were destroyed, and metal roof panels were lifted off of barns. Numerous tree limbs and some tree trunks were snapped, and debris was blown over 250yd.[81]
bgcolor=# EF0SE of MayBrownTX01:04–01:060.42abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado remained over open country and caused no damage.[82]
bgcolor=# EF1SE of MayBrownTX01:38–02:004.36abbr=onNaNabbr=on880abbr=onNaNabbr=onA mobile home's roof was torn off, a chicken coop was destroyed, and sheet metal was ripped off of a barn and tossed over 100yd. Trees were uprooted, snapped, or had branches snapped, and outdoor lawn furniture was damaged.[83]
bgcolor=# EF0StonewallPontotocOK02:13–02:140.6abbr=onNaNabbr=on75abbr=onNaNabbr=onRoof and tree damage occurred in town.[84]
bgcolor=# EF1ENE of Rocky to SSW of Cloud ChiefWashitaOK02:29–02:376.05abbr=onNaNabbr=on100abbr=onNaNabbr=onA barn was destroyed and numerous trees and power lines were downed.[85]
bgcolor=# EF1NE of AshlandPittsburgOK02:46–02:548.2abbr=onNaNabbr=on1000abbr=onNaNabbr=onPower poles and numerous trees were snapped by this large wedge tornado. An outbuilding and a home were damaged as well.[86]
bgcolor=# EF1NW of SavannaPittsburgOK02:56–03:024.6abbr=onNaNabbr=on1000abbr=onNaNabbr=onNumerous trees were snapped or uprooted by this large wedge tornado.[87]
bgcolor=# EF2NW of Hanna to SSW of StidhamMcIntoshOK02:57–03:0913.7abbr=onNaNabbr=on850abbr=onNaNabbr=onA large outbuilding was destroyed, numerous trees were snapped or uprooted, a home was damaged, and a metal high-voltage truss tower was toppled.[88]
bgcolor=# EF1SW of Stidham to Lake EufaulaMcIntoshOK03:11–03:154.7abbr=onNaNabbr=on500abbr=onNaNabbr=onA mobile home and outbuildings were destroyed, several homes had their roofs damaged, power poles were toppled, and numerous trees were snapped or uprooted.[89]
bgcolor=# EF1ENE of StidhamMcIntoshOK03:15–03:193.8abbr=onNaNabbr=on450abbr=onNaNabbr=onAn outbuilding was destroyed, a home was damaged, numerous trees were snapped or uprooted, and power poles were blown down.[90]
bgcolor=# EF1E of ChecotahMcIntoshOK03:25–03:328.8abbr=onNaNabbr=on600abbr=onNaNabbr=onPrivacy fences were downed, homes were damaged, and trees were snapped or outbuildings. Outbuildings were damaged or destroyed and power poles were toppled.[91]
bgcolor=# EF1S of RedbirdWagonerOK03:30–03:365abbr=onNaNabbr=on500abbr=onNaNabbr=onA center pivot irrigation system was destroyed and several power poles and trees were snapped.[92]
bgcolor=# EF1SW of BraggsMuskogeeOK03:35–03:405.3abbr=onNaNabbr=on900abbr=onNaNabbr=onNumerous trees were snapped or uprooted, outbuildings were damaged, and power poles were toppled.[93]
bgcolor=# EF1Western MuskogeeMuskogeeOK03:37–03:392abbr=onNaNabbr=on400abbr=onNaNabbr=onThis tornado began at the Eagle Crest Golf Club and moved into the western part of Muskogee. Several homes in town were damaged and numerous trees were snapped or uprooted. Windows were broken at a hotel, and a business had part of its roof peeled back.[94]
bgcolor=# EF1SSW of Porter to Western WagonerWagonerOK03:39–03:5210.3abbr=onNaNabbr=on700abbr=onNaNabbr=onHomes were damaged, mobile homes and RV campers were rolled, outbuildings were destroyed, power poles were blown down, and trees were snapped or uprooted. Minor tree limb damage occurred in the western part of Wagoner before the tornado dissipated.[95]
bgcolor=# EF2Northern MuskogeeMuskogeeOK03:40–03:432.8abbr=onNaNabbr=on400abbr=onNaNabbr=onThis strong tornado moved through the northern part of Muskogee, causing extensive damage. Many trees were snapped and uprooted, a metal-frame industrial building was completely destroyed, large apartment buildings had their roofs torn off, and homes sustained lesser damage. A strip mall sustained damage and had windows blown out, power poles were snapped, and outbuilding structures were destroyed as well.[96]
bgcolor=# EF1SW of BraggsMuskogeeOK03:41–03:453.7abbr=onNaNabbr=on350abbr=onNaNabbr=onTrees were uprooted and numerous large limbs were snapped, outbuildings were damaged, and power poles were downed.[97]
bgcolor=# EF1W of Fort Gibson to NNW of HulbertMuskogee, Wagoner, CherokeeOK03:45–03:5916.6abbr=onNaNabbr=on650abbr=onNaNabbr=onA tornado snapped or uprooted numerous trees along its path.[98] [99] [100]
bgcolor=# EF1SE of Wagoner to SE of ChouteauWagoner, MayesOK03:48–04:0512.7abbr=onNaNabbr=on650abbr=onNaNabbr=onHomes were damaged, several boats docks were destroyed on the shore of Fort Gibson Lake, and outbuildings were destroyed. Numerous trees were snapped or uprooted along the path.[101] [102]
bgcolor=# EF1SW of PeggsCherokee, MayesOK04:01–04:075.8abbr=onNaNabbr=on800abbr=onNaNabbr=onA tornado snapped or uprooted numerous trees.[103] [104]

May 19 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EF0SW of BentonvilleBentonAR05:07–05:092abbr=onNaNabbr=on225abbr=onNaNabbr=onA number of homes sustained roof damage, numerous large tree limbs were snapped, and several power poles were downed.[105]
bgcolor=# EF1E of JaneMcDonaldMO05:23–05:251abbr=onNaNabbr=on100abbr=onNaNabbr=onA brief tornado snapped or uprooted numerous trees. Multiple homes suffered roof damage and/or had windows blown out. One home lost half of its roof.[106]
bgcolor=# EF0SE of Shell KnobBarryMO06:04–06:050.12abbr=onNaNabbr=on100abbr=onNaNabbr=onA brief tornado damaged multiple docks and uprooted trees.[107]
bgcolor=# EF0Western BransonTaneyMO06:28–06:290.25abbr=onNaNabbr=on75abbr=onNaNabbr=onA brief tornado damaged a hotel and an outlet mall, injuring one person.[108]
bgcolor=# EF1Rockaway Beach to N of TaneyvilleTaneyMO06:30–06:408.7abbr=onNaNabbr=on200abbr=onNaNabbr=onNumerous trees were uprooted along the path.[109]
bgcolor=# EF0TurnersGreeneMO06:54–06:562.49abbr=onNaNabbr=on200abbr=onNaNabbr=onNumerous trees were uprooted in Turners, some of which fell on homes.[110]
bgcolor=# EF0ChadwickChristianMO07:00–07:033abbr=onNaNabbr=on500abbr=onNaNabbr=onNumerous trees were uprooted in Chadwick, some of which fell on homes.[111]
bgcolor=# EF1Forkners HillWebsterMO07:15–07:172abbr=onNaNabbr=on300abbr=onNaNabbr=onSeveral structures and homes sustained minor or moderate damage, an outbuilding was destroyed, and numerous trees were snapped or uprooted.[112]
bgcolor=# EF0N of DawsonWrightMO08:00–08:010.25abbr=onNaNabbr=on50abbr=onNaNabbr=onRoof damage occurred to one residence and large tree limbs were broken.[113]
bgcolor=# EF0Northeastern ThayerOregonMO08:12–08:130.75abbr=onNaNabbr=on300abbr=onNaNabbr=onNumerous trees were damaged and uprooted. Some homes were damaged.[114]
bgcolor=# EF1E of WilliamsburgCallawayMO09:15–09:161.58abbr=onNaNabbr=on50abbr=onNaNabbr=onA barn was destroyed while two others were damaged. Two vehicles were flipped, a power pole was snapped, and some debris was tossed nearly a mile downwind.[115]
bgcolor=# EF0E of New FlorenceMontgomeryMO09:23–09:283.98abbr=onNaNabbr=on75abbr=onNaNabbr=onTwo buildings at a Missouri Department of Transportation location were damaged, while 12 garage doors were also removed. The material was tossed into power lines, causing one power pole to snap. A home had its garage door damaged and porch pillars shifted off the foundation. Three barns sustained roof and door damage.[116]
bgcolor=# EF1NE of HartMcDonald, NewtonMO19:55–19:572.03abbr=onNaNabbr=on10abbr=onNaNabbr=onA home and several outbuildings sustained roof damage and trees were uprooted.[117]
bgcolor=# EF1Northern NeoshoNewtonMO20:10–20:144.1abbr=onNaNabbr=on300abbr=onNaNabbr=onTornado touched down in the northern part of Neosho and moved northeast. Numerous trees were damaged, some of which were snapped or uprooted. A few homes were damaged as well.[118]
bgcolor=# EF1SW of SulphurCrawfordIN20:22–20:240.23abbr=onNaNabbr=on50abbr=onNaNabbr=onAn old RV had its roof removed, with debris thrown up to 100yd, another RV was tipped over, and the bed of a pickup truck, which was not attached, was thrown about 150yd. A barn had one of its doors blown out and suffered significant roof damage, with debris thrown 125yd into the auto body shop parking lot, and a single-wide trailer sustained roof damage. An auto body shop sustained roof damage, vehicles in the parking lot had several windows smashed by debris, and trees were knocked down or snapped.[119]
bgcolor=# EFUNW of WintersRunnelsTX20:23–20:250.03abbr=onNaNabbr=on30abbr=onNaNabbr=onThin rope tornado remained over open country and caused no damage.[120]
bgcolor=# EF0WSW of Medicine LodgeBarberKS20:37–20:400.38abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained mainly over open country. Some minor tree damage may have occurred, but survey crews were unable to access affected areas.[121]
bgcolor=# EF1SE of Stotts CityLawrenceMO20:42–20:464.23abbr=onNaNabbr=on300abbr=onNaNabbr=onMultiple large barns were damaged or destroyed, a couple of outbuildings were damaged, and several trees were uprooted. A car was blown off of the interstate and had a piece of wood driven through its windshield.[122]
bgcolor=# EF0NNW of Medicine LodgeBarberKS20:53–21:002.98abbr=onNaNabbr=on150abbr=onNaNabbr=onThis tornado appeared to be fairly strong, and may have caused tree damage. However, damage surveyors were unable to access the affected areas.[123]
bgcolor=# EF0Northwestern MillerLawrenceMO20:57–20:581abbr=onNaNabbr=on100abbr=onNaNabbr=onThe town baseball stadium was damaged, and trees were uprooted or had branches broken off.[124]
bgcolor=# EF0SE of EvertonDadeMO21:05–21:060.86abbr=onNaNabbr=on100abbr=onNaNabbr=onTrees were uprooted.[125]
bgcolor=# EF0NE of SawyerPrattKS21:11–21:162.22abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country, causing no damage.[126]
bgcolor=# EF0NE of EvertonDadeMO21:12–21:130.47abbr=onNaNabbr=on75abbr=onNaNabbr=onSeveral trees were uprooted.[127]
bgcolor=# EF0ESE of Isabel to SSE of CairoBarber, PrattKS21:14–21:244.5abbr=onNaNabbr=on75abbr=onNaNabbr=onWeak tornado remained over open country and caused no damage.[128] [129]
bgcolor=# EF0WNW of Walnut GroveGreene, PolkMO21:19–21:200.58abbr=onNaNabbr=on100abbr=onNaNabbr=onSeveral trees were uprooted and an outbuilding sustained roof damage.[130]
bgcolor=# EF0N of NashvilleKingmanKS21:22–21:230.21abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado over an open field. No damage occurred.[131]
bgcolor=# EF0N of ZendaKingmanKS21:53–21:540.32abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado damaged the roof of a metal barn.[132]
bgcolor=# EF0N of KingmanKingmanKS22:10–22:120.31abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado over an open field. Damage occurred.[133]
bgcolor=# EF0ESE of Pretty PrairieRenoKS22:32–22:340.68abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado over an open field. No damage occurred.[134]
bgcolor=# EF0E of Pretty PrairieRenoKS22:37–22:390.64abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado over an open field. No damage occurred.[135]
bgcolor=# EFUSW of WindthorstArcherTX23:00–23:020.68abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[136]
bgcolor=# EF1Northern WardsvilleColeMO23:27–23:290.95abbr=onNaNabbr=on75abbr=onNaNabbr=onOne home sustained significant roof damage, another sustained minor roof damage, and two large trees fell on a third home. Trees were damaged, some of which were snapped or uprooted.[137]
bgcolor=# EF0SSW of BalaClayKS00:15–00:160.02abbr=onNaNabbr=on20abbr=onNaNabbr=onBrief tornado caused minor tree damage.[138]
bgcolor=# EFUW of SpringerCarterOK00:220.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[139]
bgcolor=# EFUWNW of SpringerCarterOK00:240.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[140]
bgcolor=# EF0WSW of TrickhamColemanTX00:27–00:290.08abbr=onNaNabbr=on25abbr=onNaNabbr=onTornado briefly kicked up debris but caused no noticeable damage.[141]
bgcolor=# EFUNNW of SpringerCarterOK00:31–00:330.2abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[142]
bgcolor=# EFUNNE of SpringerCarterOK00:47–00:502abbr=onNaNabbr=on400abbr=onNaNabbr=onTornado remained over open country and caused no damage.[143]
bgcolor=# EF0WNW of Strong CityChaseKS00:48–00:490.21abbr=onNaNabbr=on50abbr=onNaNabbr=onBrief tornado over an open field. No damage occurred.[144]
bgcolor=# EF0W of DunlapMorrisKS01:090.01abbr=onNaNabbr=on25abbr=onNaNabbr=onRope tornado remained over open country. No damage occurred.[145]
bgcolor=# EF1WNW of ElmdaleChaseKS01:25–01:360.8abbr=onNaNabbr=on60abbr=onNaNabbr=onA machine shed and concrete footings were lifted and thrown into a nearby tree and a few cemetery headstones were moved slightly. A large tree was split down the middle, many large tree branches were snapped, and other minor tree damage occurred.[146]
bgcolor=# EF0NW of BushongLyonKS01:380.01abbr=onNaNabbr=on25abbr=onNaNabbr=onTornado remained over open country and caused no damage.[147]
bgcolor=# EFUNW of TishomingoJohnstonOK02:32–02:341.5abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[148]
bgcolor=# EFUSW of BromideJohnstonOK02:44–02:492abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[149]
bgcolor=# EFUNNW of Milburn to SW of BromideJohnstonOK02:56–03:086abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[150]
bgcolor=# EFUNE of BromideCoalOK03:13–03:203abbr=onNaNabbr=on50abbr=onNaNabbr=onTornado remained over open country and caused no damage.[151]

May 20 event

EF#! scope="col" style="width:7%; text-align:center;" class="unsortable"
LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax widthSummary
bgcolor=# EF1SE of WirtJeffersonIN23:10–23:110.16abbr=onNaNabbr=on30abbr=onNaNabbr=onAn abandoned farm house was damaged, a house was covered by falling trees, and a camper was rolled three times and destroyed. Trees were snapped and uprooted as well. The inflow winds into the tornado pulled siding off of homes and moved light objects several hundred feet.[152]
bgcolor=# EF0SSW of WolcottBenton, WhiteIN23:34–23:391.22abbr=onNaNabbr=on50abbr=onNaNabbr=onA small building was knocked down, a small boat on a trailer was flipped, and a small tree was uprooted.[153] [154]
bgcolor=# EF1W of ThorntownBooneIN23:40–23:410.08abbr=onNaNabbr=on40abbr=onNaNabbr=onBrief tornado removed a large portion of a barn's roof and tossed it several hundred yards into a field.[155]
bgcolor=# EF1ForestClintonIN00:40–00:461.45abbr=onNaNabbr=on40abbr=onNaNabbr=onOne wall of the Forest volunteer fire station was collapsed and the roof was uplifted, a pole barn had its roof uplifted and its walls partially collapsed, a residence sustained minor roof damage, and trees were uprooted.[156]

Chetek – Conrath, Wisconsin

Chetek – Conrath, Wisconsin
Fujitascale:EF3
Highest Winds:140mph
Casualties:1 fatality, 25 injuries
Damages:$10.52 million (2017 USD)[157]

This rain-wrapped, multiple-vortex EF3 wedge tornado was the longest-tracked tornado in Wisconsin state history. It moved through rural areas in the northwestern part of the state, producing an 82.53-mile long path of damage through four counties. The tornado touched down in Polk County, several miles east of Clear Lake, very close to the Polk/Barron County line. The first point of damage occurred at a farmstead, where structures sustained EF0 damage and sheet metal was tossed into a field. The tornado then quickly crossed into Barron County. Further to the northeast, some trees were downed and another farm sustained EF0 damage, with barrels being rolled out into a field and a pole barn having its doors blown in. Continuing along an east-northeasterly path through rural areas of the county, the tornado reached EF1 intensity, snapping and uprooting many trees and striking several farms. Sheds and outbuildings were damaged or destroyed, with sheet metal thrown and wrapped around trees and pieces of lumber speared into the ground. Two silos were sheared off as well. The tornado then widened and began moving in a more due-easterly direction, reaching EF2 strength as it crossed the Red Cedar River. Outbuildings were completely destroyed, a house had its roof torn off, many trees were snapped, and several other homes and a warehouse building sustained heavy roof damage in this area. Several mobile homes were destroyed further to the east before the tornado crossed US 53 northeast of Chetek. High-end EF2 damage occurred in this area as the Prairie Lakes Estates mobile home park sustained devastating damage. Numerous mobile homes were completely destroyed at this location, with large amounts of debris scattered throughout a nearby wooded area. Structural debris, furniture, clothing, and appliances were strewn throughout the park, and several vehicles were damaged or destroyed. Many trees were snapped and denuded in this area as well. One person at Prairie Lakes was killed and several others were injured, some critically. The tornado then struck a nearby turkey farm, where several large turkey barns were completely flattened with the debris strewn downwind, killing at least 25,000 turkeys. Several wooden power poles were snapped in this area as well. The tornado maintained high-end EF2 strength as it crossed Prairie Lake, where a wide swath of trees was flattened and several lakeside cottages sustained total roof loss and collapse of exterior walls. Weakening to EF1 strength and resuming a more northeasterly path, the tornado then crossed Mud Lake, snapping many more trees and causing mostly minor damage to numerous RVs, mobile homes, and lakeside homes. Past Mud Lake, several rural properties and farmsteads were struck at EF1 intensity, with outbuildings and garages destroyed. In Barron County alone, 40 homes were destroyed, 45 were heavily damaged, and 75 others sustained minor damage. Four businesses were destroyed, and two others were damaged.[158] [159]

Maintaining EF1 strength, the tornado continued into Rusk County and destroyed or damaged numerous outbuildings and downed many trees. An isolated pocket of EF2 damage occurred several miles east of the Rusk County line, as a frame home had its roof ripped off and a nearby detached garage was completely destroyed. Debris was blown into a nearby wooded area, along with a large metal propane tank. EF1 damage continued through rural areas of the county, with countless trees snapped or uprooted, many outbuildings damaged or destroyed, and homes sustaining roof damage. A silo had its metal top blown off, and cabins sustained damage at Amacoy Lake. Past Amacoy Lake, many additional trees were downed and more outbuildings were damaged or destroyed. As the tornado approached the small village of Conrath, it re-strengthened back to EF2 intensity. A large barn was completely destroyed, a detached garage was swept away, and a manufactured home was damaged in this area. As the tornado passed just north of Conrath, it reached its maximum intensity. A poorly-anchored home was completely leveled at EF3 intensity in this area, with only a pile of rubble left behind. Nearby trees were snapped and denuded as well. Past Conrath, the tornado rapidly weakened back to EF1 strength as it continued to the east, damaging or destroying outbuildings and downing numerous trees. In Rusk County, one home was destroyed, three were severely damaged, and 21 sustained minor damage. Damage along the remainder of the path and into Price County consisted entirely of EF0 level tree damage. The tornado dissipated to the west-southwest of Ogema. The tornado reached a maximum width of 1,320 yards and killed one person. 25 others were injured.[160] [161]

See also

Notes and References

  1. http://thoughtleadership.aon.com/Documents/20170608-ab-analytics-if-may-global-recap.pdf Global Catastrophe Recap - May 2017
  2. Web site: Filtered Storm Reports for 05/15. Storm Prediction Center. Storm Prediction Center; Norman, OK. 17 May 2017.
  3. National Weather Service Weather Forecast Office in Twin Cities/Chanhassen, Minnesota. 5/16/2017 Northwest Wisconsin Tornado Upgraded to EF-3. Iowa Environmental Mesonet. May 23, 2017. May 23, 2017.
  4. Web site: Filtered Storm Reports for 05/17. Storm Prediction Center. Storm Prediction Center; Norman, OK. 17 May 2017.
  5. Web site: Filtered Storm Reports for 05/17. Storm Prediction Center. Storm Prediction Center; Norman, OK. 18 May 2017.
  6. Web site: SPC Storm Reports for 05/20/17. National Weather Service Storm Prediction Center. Storm Prediction Center; Norman, OK. 21 May 2017.
  7. National Weather Service Weather Forecast Office in La Crosse, Wisconsin. Iowa Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  8. National Weather Service Weather Forecast Office in Amarillo, Texas. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  9. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  10. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  11. National Weather Service Weather Forecast Office Twin Cities, Minnesota. Wisconsin Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  12. National Weather Service Weather Forecast Office Twin Cities, Minnesota. Wisconsin Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  13. National Weather Service Weather Forecast Office Twin Cities, Minnesota. Wisconsin Event Report: EF3 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  14. National Weather Service Weather Forecast Office Twin Cities, Minnesota. Wisconsin Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  15. National Weather Service Weather Forecast Office in Hastings, Nebraska. Nebraska Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  16. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  17. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  18. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  19. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  20. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  21. National Weather Service Weather Forecast Office in Amarillo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  22. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  23. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  24. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  25. National Weather Service Weather Forecast Office in North Platte, Nebraska. Nebraska Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  26. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  27. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  28. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  29. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  30. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF3 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  31. National Weather Service Weather Forecast Office in Green Bay, Wisconsin. Wisconsin Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  32. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF3 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  33. National Weather Service Weather Forecast Office in Hastings, Nebraska. Nebraska Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  34. National Weather Service Weather Forecast Office in Sioux Falls, South Dakota. Iowa Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  35. National Weather Service Weather Forecast Office in Sioux Falls, South Dakota. Iowa Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  36. National Weather Service Weather Forecast Office in Omaha, Nebraska. Nebraska Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  37. National Weather Service Weather Forecast Office in La Crosse, Wisconsin. Minnesota Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  38. National Weather Service Weather Forecast Office in Davenport, Iowa. Iowa Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  39. National Weather Service Weather Forecast Office in Davenport, Iowa. Iowa Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  40. National Weather Service Weather Forecast Office in La Crosse, Wisconsin. Wisconsin Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  41. National Weather Service Weather Forecast Office in Davenport, Iowa. Illinois Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  42. National Weather Service Weather Forecast Office in La Crosse, Wisconsin. Iowa Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  43. National Weather Service Weather Forecast Office in La Crosse, Wisconsin. Minnesota Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  44. National Weather Service Weather Forecast Office in Davenport, Iowa. Iowa Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  45. National Weather Service Weather Forecast Office in Davenport, Iowa. Iowa Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  46. National Weather Service Weather Forecast Office in Davenport, Iowa. Illinois Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  47. National Weather Service Weather Forecast Office in Davenport, Iowa. Illinois Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  48. National Weather Service Weather Forecast Office in Davenport, Iowa. Illinois Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  49. National Weather Service Weather Forecast Office in Davenport, Iowa. Illinois Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  50. National Weather Service Weather Forecast Office in Chicago, Illinois. Illinois Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  51. National Weather Service Weather Forecast Office in Chicago, Illinois. Illinois Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  52. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  53. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  54. National Weather Service Weather Forecast Office in Pueblo, Colorado. Colorado Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  55. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  56. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  57. National Weather Service Weather Forecast Office in Norman, Oklahoma. Texas Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  58. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  59. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  60. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  61. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  62. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  63. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  64. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  65. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  66. National Weather Service Weather Forecast Office in Dodge City, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  67. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  68. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  69. National Weather Service Weather Forecast Office in Norman, Oklahoma. Texas Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  70. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  71. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  72. National Weather Service Weather Forecast Office in Norman, Oklahoma. Texas Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  73. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EFU Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  74. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  75. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  76. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  77. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  78. National Weather Service Weather Forecast Office in Topeka, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  79. National Weather Service Weather Forecast Office in Wichita, Kansas. Kansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  80. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  81. National Weather Service Weather Forecast Office in San Angelo, Texas. Texas Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  82. National Weather Service Weather Forecast Office in San Angelo, Texas. Texas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  83. National Weather Service Weather Forecast Office in San Angelo, Texas. Texas Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  84. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  85. National Weather Service Weather Forecast Office in Norman, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 11, 2017.
  86. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  87. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  88. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  89. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  90. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  91. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  92. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  93. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  94. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  95. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  96. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF2 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  97. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  98. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  99. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  100. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  101. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  102. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  103. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  104. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Oklahoma Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  105. National Weather Service Weather Forecast Office in Tulsa, Oklahoma. Arkansas Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  106. National Weather Service Weather Forecast Office in Springfield, Missouri. Missouri Event Report: EF1 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
  107. National Weather Service Weather Forecast Office in Springfield, Missouri. Missouri Event Report: EF0 Tornado. National Centers for Environmental Information. 2017. November 12, 2017.
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