List of earthquakes in 1921

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. Indonesia and Japan were very active.

Earthquakes in 1921
Approximate epicenters of the earthquakes in 1921
Strongest magnitude Afghanistan, Badakhshan Province November 15 (Magnitude 7.8)
Deadliest Eritrea, off the coast of Massawa August 14 (Magnitude 5.9) 51+ deaths
Total fatalities51+
Number by magnitude
9.0+0
8.0−8.90
7.0−7.912
6.0−6.922
5.0−5.91
← 1920
1922 →

Overall

By death toll
Rank Death toll Magnitude Location MMI Depth (km) Date
1 51 5.9  Eritrea, off the coast of Massawa VIII (Severe) 0.0 August 14
  • Note: At least 10 casualties

By magnitude
Rank Magnitude Death toll Location MMI Depth (km) Date
1 7.8 0  Afghanistan, Badakhshan Province ( ) 240.0 November 15
2 7.6 0  Indonesia, south of Java ( ) 15.0 September 11
= 3 7.4 0  Tonga ( ) 15.0 February 27
= 3 7.4 0  Japan, Ryukyu Islands ( ) 35.0 July 4
= 3 7.4 0  Philippines, east of Mindanao VII (Very strong) 15.0 November 11
= 4 7.3 0  Honduras, El Paraiso Department ( ) 15.0 March 28
= 4 7.3 0  Peru, Loreto Region ( ) 540.0 December 18
5 7.2 0  Chile, Tarapaca Region ( ) 113.6 October 20
6 7.1 0  Solomon Islands, Santa Cruz Islands ( ) 35.0 October 15
= 7 7.0 0  Guatemala, Quiche Department ( ) 15.0 February 4
= 7 7.0 0  Japan, Ryukyu Islands ( ) 15.0 April 2
= 7 7.0 0  Japan, Ibaraki Prefecture, Honshu ( ) 35.0 December 8
  • Note: At least 7.0 magnitude

Notable events

February
February
Strongest magnitude7.4 Mw  Tonga
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[1] Guatemala, Quiche Department7.015.0 data-sort-value="" class="nowrap"|
19[2] Indonesia, West Papua (province)6.315.0 data-sort-value="" class="nowrap"|
19[3] Indonesia, Papua (province)6.925.0 data-sort-value="" class="nowrap"|
27[4] Tonga7.415.0 data-sort-value="" class="nowrap"|

March
March
Strongest magnitude7.3 Mw  Honduras
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.95
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

3[5] Japan, off the east coast of Honshu6.935.0 data-sort-value="" class="nowrap"|
5[6] India, Nicobar Islands6.620.0 data-sort-value="" class="nowrap"|
23[7] Indonesia, Banda Sea6.050.0 data-sort-value="" class="nowrap"|
24[8] Russia, off the east coast of Kamchatka6.625.0 data-sort-value="" class="nowrap"|
28[9] Honduras, El Paraiso Department7.315.0 data-sort-value="" class="nowrap"|
30[10] Indonesia, Barat Daya Islands6.6170.0 data-sort-value="" class="nowrap"|

April
April
Strongest magnitude7.0 Mw  Japan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.93
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[11] Indonesia, off the west coast of northern Sumatra6.835.0 data-sort-value="" class="nowrap"|
1[12] Solomon Islands, Santa Cruz Islands6.535.0 data-sort-value="" class="nowrap"|
2[13] Japan, southwestern Ryukyu Islands7.015.0 data-sort-value="" class="nowrap"|
10[14] Canada, west of Haida Gwaii6.535.0 data-sort-value="" class="nowrap"|

May
May
Strongest magnitude6.6 Mw  Afghanistan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.95
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[15] Mexico, off the coast of Colima6.415.0 data-sort-value="" class="nowrap"|
12[16] Papua New Guinea, Bougainville Island6.435.0 data-sort-value="" class="nowrap"|
14[17] Indonesia, Makassar Strait6.20.0 data-sort-value="8.0" class="nowrap"| VIII A few homes were damaged or destroyed. Depth unknown.
20[18] Afghanistan, Nuristan Province6.635.0 data-sort-value="" class="nowrap"|
21[19] Philippines, northeast of Samar6.435.0 data-sort-value="" class="nowrap"|

June
June
Strongest magnitude6.7 Mw  New Zealand
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

28[20] New Zealand, Hawke's Bay, North Island6.725.0 data-sort-value="" class="nowrap"|

July
July
Strongest magnitude7.4 Mw  Japan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[21] Japan, Ryukyu Islands7.435.0 data-sort-value="" class="nowrap"|
15[22] Indonesia, off the northeast coast of Halmahera6.0140.0 data-sort-value="" class="nowrap"|

August
August
Strongest magnitude5.9 Mw  Eritrea
Deadliest5.9 Mw  Eritrea
51+ deaths
Total fatalities51+
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.90
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[23] China, Liaoning Province0.00.0 data-sort-value="" class="nowrap"| The magnitude, depth and location were unknown. A tsunami caused major flooding in the area. Some homes were destroyed.
14[24] Eritrea, off the coast of Massawa5.90.0 data-sort-value="8.0" class="nowrap"| VIII The 1921 Massawa earthquake caused at least 51 deaths and major damage.51+

September
September
Strongest magnitude7.6 Mw  Indonesia
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

11[25][26] Indonesia, south of Java7.615.0 data-sort-value="" class="nowrap"| Some light damage was reported on Java. A minor tsunami was reported.
27[27] Japan, eastern Sea of Japan6.55.0 data-sort-value="" class="nowrap"|

October
October
Strongest magnitude7.2 Mw  Chile
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

10[28][29] Indonesia, Papua (province)6.635.0 data-sort-value="7.0" class="nowrap"| VII Some damage was reported.
12[30] Russia, Kuril Islands6.6100.0 data-sort-value="" class="nowrap"|
15[31] Solomon Islands, Santa Cruz Islands7.135.0 data-sort-value="" class="nowrap"|
20[32] Chile, Tarapaca Region7.2113.6 data-sort-value="" class="nowrap"|

November
November
Strongest magnitude7.8 Mw  Afghanistan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.92
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

7[33][34] Philippines, southeast of Mindanao6.635.0 data-sort-value="8.0" class="nowrap"| VIII Some homes were damaged.
11[35][36][37] Philippines, east of Mindanao7.415.0 data-sort-value="7.0" class="nowrap"| VII A tsunami was reported. Some homes were damaged.
13[38] Colombia, La Guajira Department6.315.0 data-sort-value="" class="nowrap"|
15[39] Afghanistan, Badakhshan Province7.8240.0 data-sort-value="" class="nowrap"|

December
December
Strongest magnitude7.3 Mw  Peru
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.90
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

8[40] Japan, Ibaraki Prefecture, Honshu7.035.0 data-sort-value="" class="nowrap"|
18[41] Peru, Loreto Region7.3540.0 data-sort-value="" class="nowrap"|
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References
  1. "M 7.0 - Guatemala". United States Geological Survey. February 4, 1921. Retrieved December 19, 2015.
  2. "M 6.3 - near the north coast of Papua, Indonesia". United States Geological Survey. February 19, 1921. Retrieved December 19, 2015.
  3. "M 6.9 - near the north coast of Papua, Indonesia". United States Geological Survey. February 19, 1921. Retrieved December 19, 2015.
  4. "M 7.4 - Tonga". United States Geological Survey. February 27, 1921. Retrieved December 19, 2015.
  5. "Centennial Earthquake Catalog". United States Geological Survey. March 3, 1921. Retrieved December 19, 2015.
  6. "M 6.6 - Nicobar Islands, India region". United States Geological Survey. March 5, 1921. Retrieved December 19, 2015.
  7. "On-Line Bulletin". International Seismological Centre. March 23, 1921. Retrieved December 19, 2015.
  8. "M 6.6 - near the east coast of the Kamchatka Peninsula, Russia". United States Geological Survey. March 24, 1921. Retrieved December 19, 2015.
  9. "M 7.3 - Honduras". United States Geological Survey. March 28, 1921. Retrieved December 19, 2015.
  10. "Centennial Earthquake Catalog". United States Geological Survey. March 30, 1921. Retrieved December 19, 2015.
  11. "M 6.8 - northern Sumatra, Indonesia". United States Geological Survey. April 1, 1921. Retrieved December 19, 2015.
  12. "M 6.5 - Santa Cruz Islands region". United States Geological Survey. April 1, 1921. Retrieved December 19, 2015.
  13. "M 7.0 - southwestern Ryukyu Islands, Japan". United States Geological Survey. April 2, 1921. Retrieved December 19, 2015.
  14. "On-Line Bulletin". International Seismological Centre. April 10, 1921. Retrieved December 19, 2015.
  15. "M 6.4 - offshore Colima, Mexico". United States Geological Survey. May 1, 1921. Retrieved December 19, 2015.
  16. "M 6.4 - Bougainville region, Papua New Guinea". United States Geological Survey. May 12, 1921. Retrieved December 19, 2015.
  17. "Significant Earthquake: INDONESIA: SANGKULIRANG,RENDING,KARIORANG,SEKURAN". National Geophysical Data Center. May 14, 1921. Retrieved December 19, 2015.
  18. "Centennial Earthquake Catalog". United States Geological Survey. May 20, 1921. Retrieved December 19, 2015.
  19. "M 6.4 - Samar, Philippines". United States Geological Survey. May 21, 1921. Retrieved December 19, 2015.
  20. "M 6.7 - North Island of New Zealand". United States Geological Survey. June 28, 1921. Retrieved December 19, 2015.
  21. "Centennial Earthquake Catalog". United States Geological Survey. July 4, 1921. Retrieved December 19, 2015.
  22. "On-Line Bulletin". International Seismological Centre. July 15, 1921. Retrieved December 19, 2015.
  23. "Tsunami Event: XIAOSI, DANDONG, LIAONING". National Geophysical Data Center. August 4, 1921. Retrieved December 20, 2015.
  24. "Significant Earthquake: ETHIOPIA: MESEWA (MASSAUA)". National Geophysical Data Center. August 14, 1921. Retrieved December 20, 2015.
  25. "M 7.6 - south of Java, Indonesia". United States Geological Survey. September 11, 1921. Retrieved December 20, 2015.
  26. "Significant Earthquake: INDONESIA: S OF JAVA". National Geophysical Data Center. September 11, 1921. Retrieved December 20, 2015.
  27. "Centennial Earthquake Catalog". United States Geological Survey. September 27, 1921. Retrieved December 20, 2015.
  28. "M 6.6 - Papua, Indonesia". United States Geological Survey. October 10, 1921. Retrieved December 20, 2015.
  29. "Significant Earthquake: INDONESIA: NEW GUINEA: IRIAN JAYA: SENTANI". National Geophysical Data Center. October 10, 1921. Retrieved December 20, 2015.
  30. "Centennial Earthquake Catalog". United States Geological Survey. October 12, 1921. Retrieved December 20, 2015.
  31. "M 7.1 - Santa Cruz Islands". United States Geological Survey. October 15, 1921. Retrieved December 20, 2015.
  32. "Centennial Earthquake Catalog". United States Geological Survey. October 20, 1921. Retrieved December 20, 2015.
  33. "M 6.6 - Mindanao, Philippines". United States Geological Survey. November 7, 1921. Retrieved December 20, 2015.
  34. "Significant Earthquake: PHILIPPINES: E MINDANAO: MANAY". National Geophysical Data Center. November 7, 1921. Retrieved December 20, 2015.
  35. "M 7.4 - Philippine Islands region". United States Geological Survey. November 11, 1921. Retrieved December 20, 2015.
  36. "Significant Earthquake: PHILIPPINES: MINDANAO: E". National Geophysical Data Center. November 11, 1921. Retrieved December 20, 2015.
  37. "Tsunami Event: PHILIPPINE TRENCH". National Geophysical Data Center. November 11, 1921. Retrieved December 20, 2015.
  38. "M 6.3 - near the coast of Venezuela". United States Geological Survey. November 13, 1921. Retrieved December 20, 2015.
  39. "M 7.8 - Hindu Kush region, Afghanistan". United States Geological Survey. November 15, 1921. Retrieved December 20, 2015.
  40. "Centennial Earthquake Catalog". United States Geological Survey. December 8, 1921. Retrieved December 20, 2015.
  41. "M 7.3 - northern Peru". United States Geological Survey. December 18, 1921. Retrieved December 20, 2015.
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