| Basin: | NIO |
| Year: | 1997 |
| Track: | 1997 North Indian Ocean cyclone season summary.jpg |
| First Storm Formed: | May 14, 1997 |
| Last Storm Dissipated: | November 13, 1997 |
| Strongest Storm Name: | BOB 01 |
| Strongest Storm Pressure: | 964 |
| Strongest Storm Winds: | 90 |
| Average Wind Speed: | 3 |
| Total Disturbances: | 10 |
| Total Depressions: | 9 |
| Total Storms: | 4 |
| Total Hurricanes: | 2 |
| Total Intense: | 1 |
| Total Extreme: | 1 |
| Fatalities: | 413 total |
| Five Seasons: | 1995, 1996, 1997, 1998, 1999 |
| Atlantic Season: | 1997 Atlantic hurricane season |
| East Pacific Season: | 1997 Pacific hurricane season |
| West Pacific Season: | 1997 Pacific typhoon season |
The 1997 North Indian Ocean cyclone season had no bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.__TOC__
Five tropical cyclones were observed, making 1997 an average season. However, 3 reached Cyclone strength.
| Basin: | NIO |
| Track: | Cyclone 01A 1997 track.png |
| Formed: | May 14 |
| Dissipated: | May 20 |
| 3-Min Winds: | 90 |
| 1-Min Winds: | 115 |
| Pressure: | 964 |
See main article: May 1997 Bangladesh cyclone. On May 13, a near-equatorial trough developed. The poorly organized system slowly tracked towards the north-northwest. The following day, deep convection consolidated around the center of circulation and the Joint Typhoon Warning Center (JTWC) classified the system as Tropical Cyclone 01B. Favorable upper-level conditions and good outflow allowed the storm to intensify. Shortly after, the cyclone attained tropical storm-force winds and turned towards the northeast. While gradually increasing in forward motion, the storm continued to strengthen. On May 17, the cyclone attained winds of 120 km/h (75 km/h), equivalent to a Category 1 hurricane on the Saffir–Simpson scale. By May 18 an eye developed and the storm reached its peak intensity with winds of 215abbr=onNaNabbr=on before making landfall near Chittagong. After landfall, the storm rapidly tracked northeastward inland and dissipated early on May 20.[1] It caused significant damage and 67 fatalities.[2]
| Basin: | NIO |
| Track: | BOB 02 1997 track.jpg |
| Formed: | June 26 |
| Dissipated: | June 30 |
| 3-Min Winds: | 30 |
| Pressure: | 985 |
| Basin: | NIO |
| Track: | BOB 3 1997 track.jpg |
| Formed: | July 29 |
| Dissipated: | August 2 |
| 3-Min Winds: | 30 |
| Pressure: | 1002 |
| Basin: | NIO |
| Track: | BOB 4 1997 track.jpg |
| Formed: | August 4 |
| Dissipated: | August 7 |
| 3-Min Winds: | 30 |
| Pressure: | 988 |
| Basin: | NIO |
| Track: | BOB 5 1997 track.jpg |
| Formed: | August 20 |
| Dissipated: | August 27 |
| 3-Min Winds: | 30 |
| Pressure: | 990 |
| Basin: | NIO |
| Track: | BOB 6.jpg |
| Formed: | August 28 |
| Dissipated: | August 30 |
| 3-Min Winds: | 25 |
| Pressure: | 994 |
| Basin: | NIO |
| Track: | Cyclone 02B 1997 track.png |
| Formed: | September 19 |
| Dissipated: | September 27 |
| 3-Min Winds: | 55 |
| 1-Min Winds: | 65 |
| Pressure: | 994 |
On September 19, a tropical depression formed from an area of disturbed weather in the western Bay of Bengal. It drifted northwestward towards the Indian coastline, but a mid-latitude trough pulled it northeastward, The depression strengthened to a tropical storm on the 24th, and it reached cyclone strength while paralleling the Indian coastline on 26th. It made landfall in Bangladesh on the 27th, and dissipated shortly thereafter. Tropical Cyclone 2B was responsible for 51 fatalities and left an additional 137 people missing.[3]
| Basin: | NIO |
| Track: | Cyclone 04A 1997 track.png |
| Formed: | November 2 |
| Dissipated: | November 14 |
| 3-Min Winds: | 30 |
| 1-Min Winds: | 35 |
| Pressure: | 1005 |
On November 2, a tropical depression developed over Sri Lanka. It drifted southward, northward, then westward over India. On the 10th, it was upgraded to a tropical storm over the Arabian Sea, and it reached its peak of 650NaN0 winds the next day. Wind shear caused the storm to dissipate over the open waters on the 14th.
| Basin: | NIO |
| Track: | Linda WPac 1997 track.png |
| Formed: | November 3 (entered basin) |
| Dissipated: | November 9 |
| 3-Min Winds: | 35 |
| 1-Min Winds: | 65 |
| Pressure: | 1004 |
See main article: Tropical Storm Linda (1997). Typhoon Linda killed 30 while crossing the Malay Peninsula, emerged into the Bay of Bengal on November 4. It continued westward, reaching cyclone strength again, but vertical shear caused it to dissipate on the 9th.
In southern Thailand, 30 people were killed and 102 others were listed as missing as a result of the storm. Linda damaged at least 100 homes and sank 30 ships in the region.[4] An estimated 6,400,000 m2 of farmland were destroyed by Linda.[5]
| Basin: | NIO |
| Track: | Cyclone 03A 1997 track.png |
| Formed: | November 4 |
| Dissipated: | November 10 |
| 1-Min Winds: | 35 |
A broad trough of low pressure formed into a tropical depression on November 4 in the central Arabian Sea. It moved westward, slowly intensifying into a tropical storm on the 8th. Vertical shear weakened it to a depression later that day, but on the 9th, just before making landfall on eastern Somalia, it restrengthened to a tropical storm. Tropical Storm Three dissipated on the 10th without causing any reported damage.