List of earthquakes in 1921 explained

Year:1921
Location Map:Earth
Largest: Afghanistan, Badakhshan Province November 15 (Magnitude 7.8)
Deadliest: Italian Eritrea, off the coast of Massawa August 14 (Magnitude 5.9) 51+ deaths
Fatalities:51+
9.0+:0
8.0−8.9:0
7.0−7.9:12
6.0−6.9:22
5.0−5.9:1

This is a list of earthquakes in 1921. Only magnitude 6.0 or greater earthquakes appear on the list. Lower magnitude events are included if they have caused death, injury or damage. Events which occurred in remote areas will be excluded from the list as they wouldn't have generated significant media interest. All dates are listed according to UTC time. In a stark contrast to 1920, the death toll for this year was only 51. Dutch East Indies and Japan were very active.

Overall

By death toll

By magnitude

RankMagnitudeDeath tollLocationMMIDepth (km)Date
1 Afghanistan, Badakhshan Province
2, south of Java
= 3 Tonga
= 3 Japan, Ryukyu Islands
= 3 Philippines, east of Mindanao
= 4 Honduras, El Paraiso Department
= 4 Peru, Loreto Region
5 Chile, Tarapaca Region
6 British Solomon Islands, Santa Cruz Islands
= 7 Guatemala, Quiche Department
= 7 Japan, Ryukyu Islands
= 7 Japan, Ibaraki Prefecture, Honshu

Notable events

February

Month:February
8.0–8.9:0
7.0–7.9:2
6.0–6.9:2
Largest:7.4 Mw Tonga
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[1] 7.0 15.0
[2] 6.3 15.0
[3] 6.9 25.0
[4] 7.4 15.0

March

Month:March
8.0–8.9:0
7.0–7.9:1
6.0–6.9:5
Largest:7.3 Mw Honduras
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[5] 6.9 35.0
[6] 6.6 20.0
[7] 6.0 50.0
[8] 6.6 25.0
[9] 7.3 15.0
[10] 6.6 170.0

April

Month:April
8.0–8.9:0
7.0–7.9:1
6.0–6.9:3
Largest:7.0 Mw Japan
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[11] 6.8 35.0
[12] 6.5 35.0
[13] 7.0 15.0
[14] 6.5 35.0

May

Month:May
8.0–8.9:0
7.0–7.9:0
6.0–6.9:5
Largest:6.6 Mw Afghanistan
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[15] 6.4 15.0
[16] 6.4 35.0
[17] 6.2 0.0 A few homes were damaged or destroyed. Depth unknown.
[18] 6.6 35.0
[19] 6.4 35.0

June

Month:June
8.0–8.9:0
7.0–7.9:0
6.0–6.9:1
Largest:6.7 Mw New Zealand
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[20] 6.7 25.0

July

Month:July
8.0–8.9:0
7.0–7.9:1
6.0–6.9:1
Largest:7.4 Mw Japan
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[21] 7.4 35.0
[22] 6.0 140.0

August

Month:August
8.0–8.9:0
7.0–7.9:0
6.0–6.9:0
5.0-5.9:1
Largest:5.9 Mw Italian Eritrea
Deadliest:5.9 Mw Italian Eritrea
51+ deaths
Fatalities:51+
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[23] 0.0 0.0 The magnitude, depth and location were unknown. A tsunami caused major flooding in the area. Some homes were destroyed.
[24] 5.9 0.0 The 1921 Massawa earthquake caused at least 51 deaths and major damage. 51+

September

Month:September
8.0–8.9:0
7.0–7.9:1
6.0–6.9:1
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[25] [26] 7.6 15.0 Some light damage was reported on Java. A minor tsunami was reported.
[27] 6.5 5.0

October

Month:October
8.0–8.9:0
7.0–7.9:2
6.0–6.9:2
Largest:7.2 Mw Chile
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[28] [29] 6.6 35.0 Some damage was reported.
[30] 6.6 100.0
[31] 7.1 35.0
[32] 7.2 113.6

November

Month:November
8.0–8.9:0
7.0–7.9:2
6.0–6.9:2
Largest:7.8 Mw Afghanistan
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[33] [34] 6.6 35.0 Some homes were damaged.
[35] [36] [37] 7.4 15.0 A tsunami was reported. Some homes were damaged.
[38] 6.3 15.0
[39] 7.8 240.0

December

Month:December
8.0–8.9:0
7.0–7.9:2
6.0–6.9:0
Largest:7.3 Mw Peru
Fatalities:0
Date! rowspan="2" style="width: 310px"
Country and locationMwDepth (km)MMINotesCasualties
DeadInjured
[40] 7.0 35.0
[41] 7.3 540.0

Notes and References

  1. Web site: M 7.0 - Guatemala. United States Geological Survey. December 19, 2015 . February 4, 1921.
  2. Web site: M 6.3 - near the north coast of Papua, Indonesia. United States Geological Survey. December 19, 2015 . February 19, 1921.
  3. Web site: M 6.9 - near the north coast of Papua, Indonesia. United States Geological Survey. December 19, 2015 . February 19, 1921.
  4. Web site: M 7.4 - Tonga. United States Geological Survey. December 19, 2015 . February 27, 1921.
  5. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 19, 2015 . March 3, 1921.
  6. Web site: M 6.6 - Nicobar Islands, India region. United States Geological Survey. December 19, 2015 . March 5, 1921.
  7. Web site: On-Line Bulletin. International Seismological Centre. December 19, 2015 . March 23, 1921.
  8. Web site: M 6.6 - near the east coast of the Kamchatka Peninsula, Russia. United States Geological Survey. December 19, 2015 . March 24, 1921.
  9. Web site: M 7.3 - Honduras. United States Geological Survey. December 19, 2015 . March 28, 1921.
  10. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 19, 2015 . March 30, 1921.
  11. Web site: M 6.8 - northern Sumatra, Indonesia. United States Geological Survey. December 19, 2015 . April 1, 1921.
  12. Web site: M 6.5 - Santa Cruz Islands region. United States Geological Survey. December 19, 2015 . April 1, 1921.
  13. Web site: M 7.0 - southwestern Ryukyu Islands, Japan. United States Geological Survey. December 19, 2015 . April 2, 1921.
  14. Web site: On-Line Bulletin. International Seismological Centre. December 19, 2015 . April 10, 1921.
  15. Web site: M 6.4 - offshore Colima, Mexico. United States Geological Survey. December 19, 2015 . May 1, 1921.
  16. Web site: M 6.4 - Bougainville region, Papua New Guinea. United States Geological Survey. December 19, 2015 . May 12, 1921.
  17. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972. NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K. March 23, 2024 .
  18. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 19, 2015 . May 20, 1921.
  19. Web site: M 6.4 - Samar, Philippines. United States Geological Survey. December 19, 2015 . May 21, 1921.
  20. Web site: M 6.7 - North Island of New Zealand. United States Geological Survey. December 19, 2015 . June 28, 1921.
  21. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 19, 2015 . July 4, 1921.
  22. Web site: On-Line Bulletin. International Seismological Centre. December 19, 2015 . July 15, 1921.
  23. Web site: Tsunami Event Information. National Geophysical Data Center / World Data Service: NCEI/WDS Global Historical Tsunami Database. NOAA National Centers for Environmental Information.. NOAA National Centers for Environmental Information. 10.7289/V5PN93H7. March 23, 2024 .
  24. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972. NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K. March 23, 2024.
  25. Web site: M 7.6 - south of Java, Indonesia. United States Geological Survey. December 20, 2015 . September 11, 1921.
  26. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972. NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K. March 23, 2024.
  27. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 20, 2015 . September 27, 1921.
  28. Web site: M 6.6 - Papua, Indonesia. United States Geological Survey. December 20, 2015 . October 10, 1921.
  29. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972 . NOAA National Centers for Environmental Information . 10.7289/V5TD9V7K. March 23, 2024.
  30. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 20, 2015 . October 12, 1921.
  31. Web site: M 7.1 - Santa Cruz Islands. United States Geological Survey. December 20, 2015 . October 15, 1921.
  32. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 20, 2015 . October 20, 1921.
  33. Web site: M 6.6 - Mindanao, Philippines. United States Geological Survey. December 20, 2015 . November 7, 1921.
  34. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972. NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K. March 23, 2024.
  35. Web site: M 7.4 - Philippine Islands region. United States Geological Survey. December 20, 2015 . November 11, 1921.
  36. Web site: Significant Earthquake Information. National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information.. 1972. NOAA National Centers for Environmental Information. 10.7289/V5TD9V7K. March 23, 2024.
  37. Web site: Tsunami Event Information. National Geophysical Data Center / World Data Service: NCEI/WDS Global Historical Tsunami Database. NOAA National Centers for Environmental Information.. NOAA National Centers for Environmental Information. 10.7289/V5PN93H7. March 23, 2024.
  38. Web site: M 6.3 - near the coast of Venezuela. United States Geological Survey. December 20, 2015 . November 13, 1921.
  39. Web site: M 7.8 - Hindu Kush region, Afghanistan. United States Geological Survey. December 20, 2015 . November 15, 1921.
  40. Web site: Centennial Earthquake Catalog. United States Geological Survey. December 20, 2015 . December 8, 1921.
  41. Web site: M 7.3 - northern Peru. United States Geological Survey. December 20, 2015 . December 18, 1921.

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