List of earthquakes in 1956

This is a list of earthquakes in 1956. 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. Again a fairly active year. 11 magnitude 7.0+ earthquakes were recorded with the largest of those striking Greece in the summer. The event in Greece measured 7.7 and was one of the largest ever to affect the country. In all earthquakes in 1956 resulted in 910 fatalities. Iran had the deadliest event of the year with 347 deaths in October. Burma, Lebanon, Afghanistan, Greece and India also suffered from deadly events.

Earthquakes in 1956
Approximate epicenters of the earthquakes in 1956
Strongest magnitude Greece, Dodecanese Islands (Magnitude 7.7) 9 July
Deadliest Iran, Hormozgan Province (Magnitude 6.4) 31 October 347 deaths
Total fatalities910
Number by magnitude
9.0+0
8.0−8.90
7.0−7.911
6.0−6.9104
5.0−5.97
← 1955
1957 →

Overall

By death toll
Rank Death toll Magnitude Location MMI Depth (km) Date
1 347 6.4  Iran, Hormozgan Province VII (Very strong) 15.0 October 31
2 156 6.0  India, Gujarat IX (Violent) 15.0 July 21
3 148 5.3  Lebanon, Mount Lebanon Governorate ( ) 15.0 March 16
4 100 7.3  Afghanistan, Baghlan Province VII (Very strong) 25.0 June 9
5 56 7.7  Greece, Dodecanese Islands IX (Violent) 20.0 July 9
6 51 5.5  Greece, Thessaly VIII (Severe) 15.0 November 2
7 38 6.8  Burma, Sagaing Region VI (Strong) 34.3 July 16
  • Note: At least 10 casualties

By magnitude
Rank Magnitude Death toll Location MMI Depth (km) Date
1 7.7 56  Greece, Dodecanese Islands IX (Violent) 20.0 July 9
2 7.6 0  Fiji IV (Light) 419.1 May 23
3 7.5 0  Japan, Chiba Prefecture, Honshu VII (Very strong) 66.1 September 29
= 4 7.3 0  Japan, Izu Islands ( ) 484.1 February 18
= 4 7.3 100  Afghanistan, Baghlan Province VII (Very strong) 25.0 June 9
= 4 7.3 0  Soviet Union, Kuril Islands, Russia VII (Very strong) 100.4 October 11
5 7.2 0  Indonesia, Banda Sea ( ) 136.8 July 18
6 7.1 0  Nicaragua off the west coast of Nicaragua VII (Very strong) 35.0 October 24
= 7 7.0 0  Tonga, south of ( ) 35.0 January 10
= 7 7.0 0  Ecuador, Manabí Province IX (Violent) 20.0 January 16
= 7 7.0 0  Fiji, south of ( ) 198.0 December 27
  • Note: At least 7.0 magnitude

Notable events

January
January
Strongest magnitude7.0 Mw 2 events
Deadliest5.8 Mw  Hungary
2 deaths
Total fatalities3
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.912
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[1] Indonesia, Banda Sea6.5170.0
8[2][3][4] Mexico, Guerrero6.220.0VI At least 101 people were injured and major property damage was caused.101+
8[5][6][7] Chile, off the coast of Arica and Parinacota Region6.651.5VII At least 1 person was killed and some damage was caused.1+
9[8] Fiji, south of6.5610.0
10[9] Tonga, south of7.035.0
11[10] New Zealand, Taranaki, North Island6.2180.0
12[11][12][13] Hungary, Budapest5.815.0VII A rare event struck the eastern suburbs of the city. 2 people were killed and major damage was caused.2
14[14] United States, Andreanof Islands, Alaska6.046.5
16[15][16][17] Ecuador, Manabi Province7.020.0IX Some damage was caused.
18[18][19] Chile, Antofagasta Region6.235.0VI
21[20] Burma, Chin State6.160.0
23[21] Soviet Union, off the east coast of Kamchatka, Russia6.675.1
28[22][23] Australia, East New Britain Province, Papua New Guinea6.050.0VI
30[24][25] New Zealand, north of North Island6.415.0V
31[26] Australia, New Ireland (island), Papua New Guinea6.9400.0

February
February
Strongest magnitude7.3 Mw  Japan
Deadliest6.2 Mw  Turkey
4 deaths
Total fatalities4
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.914
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[27] United States, Northern Mariana Islands6.7370.1
1[28] Italy, off the west coast of Calabria6.2225.0
4[29] United Kingdom, Katavi Region, Tanzania6.20.0 Unknown depth.
9[30][31] Mexico, Baja California6.86.0VIII
9[32][33] Mexico, Baja California6.26.0VIII Aftershock.
10[34] Japan, off the east coast of Honshu6.138.5
12[35] Philippines, off the northwest coast of Luzon6.420.7
13[36] Philippines, off the northwest coast of Luzon6.115.0 Aftershock.
14[37] Philippines, off the northwest coast of Luzon6.115.0 Aftershock.
14[38][39] Mexico, Baja California6.46.0 rowspan="2"| Southeast of previous weeks events. Doublet earthquake.
15[40][41] Mexico, Baja California6.315.0VII
18[42] Japan, Izu Islands7.3484.1
19[43] Canada, south of Haida Gwaii6.515.0
20[44][45][46] Turkey, Eskisehir Province6.215.0VIII 4 people were killed and some damage was caused.4
29[47][48] Burma, Sagaing Province6.252.7VI

March
March
Strongest magnitude6.5 Mw 2 events
Deadliest5.3 Mw  Lebanon
148 deaths
Total fatalities148
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.96
5.0−5.93
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

2[49] New Zealand, Waikato, North Island5.30.0VII Some structural damage was caused. Unknown depth.
3[50] Tonga6.535.0
5[51][52] China, southern Xinjiang Province6.115.0VII
5[53][54] Japan, off the north coast of Hokkaido6.320.0VI
13[55][56] Panama, off the south coast6.225.0V
16[57][58] Lebanon, Mount Lebanon Governorate5.315.0 rowspan="2"| 148 people were killed and major damage was caused by the 1956 Chim earthquake. Doublet earthquake with 2 events eleven minutes apart.148
16[59][60] Lebanon, Beqaa Governorate5.515.0VII
19[61][62] Australia, West New Britain Province, Papua New Guinea6.150.3V
22[63] Ecuador, Morona-Santiago Province6.586.3

April
April
Strongest magnitude6.9 Mw  New Zealand
Deadliest0.0 Mw  Spain
7 deaths
Total fatalities7
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.98
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

2[64][65] Indonesia, northwest of Nias6.329.9VI
4[66] United Kingdom, Singida Region, Tanzania6.50.0 Unknown depth.
6[67] Afghanistan, Badakhshan Province6.6214.2
7[68] New Zealand, Kermadec Islands6.9346.9
10[69] Indonesia, southern Sumatra6.6129.8
18[70] United States, Andreanof Islands, Alaska6.145.0
19[71] Spain, Province of Granada0.00.0 7 deaths were caused as well as major damage.7
22[72][73] Australia, East New Britain Province, Papua New Guinea6.035.0V
23[74][75] Japan, off the southeast coast of Hokkaido6.235.0IV

May
May
Strongest magnitude7.6 Mw  Fiji
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.96
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

1[76] Indonesia, off the west coast of southern Sumatra6.666.0
13[77][78] Pakistan, Punjab, Pakistan6.135.0VI
19[79][80] Australia, south of Bougainville Island, Papua New Guinea6.235.0VI
22[81] Tonga6.345.0
22[82] Australia, New Ireland (island), Papua New Guinea6.2506.0
23[83][84] Fiji7.6419.1IV
26[85] Fiji6.5615.0 Aftershock.

June
June
Strongest magnitude7.3 Mw  Afghanistan
Deadliest7.3 Mw  Afghanistan
100 deaths
Total fatalities100
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.94
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

9[86][87] Chile, Coquimbo Region6.623.5VII
9[88][89][90] Afghanistan, Baghlan Province7.325.0VII 100 people were killed.100
23[91][92] Soviet Union, off the east coast of Kamchatka, Russia6.520.0VI
24[93][94] Australia, southwest of Bougainville Island, Papua New Guinea6.015.0IV
29[95] Taiwan, off the east coast of6.215.0

July
July
Strongest magnitude7.7 Mw  Greece
Deadliest6.0 Mw  India
156 deaths
Total fatalities250
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.911
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

3[96] Afghanistan, Badakhshan Province6.1215.7
4[97][98] United Kingdom, Solomon Islands6.050.0V
9[99][100][101][102] Greece, Dodecanese Islands7.720.0IX The 1956 Amorgos earthquake left at least 56 people dead. The earthquake which was one of the strongest in Greek history caused 53 deaths and major damage. A tsunami resulted in a further 3 deaths.56
9[103] Greece, Dodecanese Islands6.715.0 Aftershock.
9[104][105] Haiti, Nord-Ouest (department)6.255.0VI
12[106] Burma, Magway Region6.290.0
16[107][108][109] Burma, Sagaing Region6.834.3VII 38 people were killed and some damage was caused in the 1956 Sagaing earthquake.38
17[110][111] Indonesia, Banda Sea6.8450.8III
18[112] Indonesia, Banda Sea7.2136.8
19[113][114] Philippines, off the west coast of Luzon6.135.0VI
21[115][116][117] India, Gujarat6.015.0IX The 1956 Anjar earthquake left 156 people dead and major damage.156
22[118] Chile, Tarapaca Region6.196.8
30[119] Greece, north of Crete6.115.0

August
August
Strongest magnitude6.5 Mw  Tonga
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.96
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

4[120][121] Australia, off the east coast of New Britain, Papua New Guinea6.235.0V
9[122] Tonga6.5288.2
12[123][124] Japan, south of Honshu6.420.0VI
15[125] Indonesia, southern Sumatra6.4297.3
15[126] Indonesia, Gulf of Tomini6.3170.0
19[127] China, Shanxi Province5.00.0VII A few homes were destroyed. Unknown depth.
23[128][129] Bolivia, La Paz Department (Bolivia)6.335.0VII

September
September
Strongest magnitude7.5 Mw  Japan
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.96
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

11[130] Fiji6.115.0
11[131] New Hebrides, Vanuatu6.00.0 Unknown depth.
15[132] Chile, Tarapaca Region6.894.8
16[133][134] Afghanistan, Paktia Province6.510.0VIII
17[135] United Kingdom, Lake Malawi, Malawi6.00.0 Unknown depth.
19[136] Burma, Sagaing Region6.1114.9
29[137][138] Japan, Chiba Prefecture, Honshu7.566.1VII

October
October
Strongest magnitude7.3 Mw  Soviet Union
Deadliest6.4 Mw  Iran
347 deaths
Total fatalities347
Number by magnitude
8.0−8.90
7.0−7.92
6.0−6.913
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

3[139] Chile, Tarapaca Region6.597.3
8[140] Tonga6.015.0
10[141] India, Uttar Pradesh6.015.0
11[142][143] Soviet Union, Kuril Islands, Russia7.3100.4VII
12[144][145] Peru, off the coast of central6.135.0V
12[146] Japan, off the southeast coast of Hokkaido6.135.0
13[147] Afghanistan, Badakhshan Province6.1100.0
19[148] United States, Rat Islands, Alaska6.525.0
22[149][150] Australia, D'Entrecasteaux Islands, Papua New Guinea6.215.0VII
23[151][152] Philippines, north of Mindoro6.790.4VI
24[153][154] Nicaragua, off the west coast of7.135.0VII 1956 Nicaragua earthquake.
25[155][156] Nicaragua, Carazo Department6.235.0VI Aftershock.
26[157][158] New Hebrides, Vanuatu6.310.0V
28[159][160] Philippines, eastern Luzon6.320.0VI
31[161][162][163] Iran, Hormozgan Province6.415.0VII 347 people were killed and major damage was reported.347

November
November
Strongest magnitude6.4 Mw  Mexico
Deadliest5.5 Mw  Greece
51+ deaths
Total fatalities51+
Number by magnitude
8.0−8.90
7.0−7.90
6.0−6.96
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

2[164][165][166] Greece, eastern Thessaly5.515.0VIII At least 51 people were killed.51+
9[167] Mexico, Veracruz6.4148.9
10[168] Costa Rica, off the west coast6.070.0
10[169][170] Philippines, central Luzon6.015.0VII
16[171][172] Venezuela, Merida (state)6.115.0VII
21[173] Japan, off the east coast of Honshu6.141.0
25[174][175] New Hebrides, Vanuatu6.015.0V

December
December
Strongest magnitude7.0 Mw  Fiji
Total fatalities0
Number by magnitude
8.0−8.90
7.0−7.91
6.0−6.912
5.0−5.91
Date Country and location Mw Depth (km) MMI Notes Casualties
Dead Injured

3[176] United States, Fox Islands (Alaska)6.013.6
4[177] Mexico, Chiapas6.089.4
8[178] United States, Andreanof Islands, Alaska6.525.0
15[179] New Hebrides, Vanuatu6.1151.3
16[180][181] Colombia, off the west coast of6.032.8VI
18[182][183] Chile, Antofagasta Region6.844.9VII
21[184] Canada, south of Haida Gwaii6.515.0
21[185][186] Japan, Izu Islands6.015.0VI
22[187][188] Japan, Izu Islands6.215.0VI
23[189] Japan, Volcano Islands6.590.0
26[190] United Kingdom, Santa Cruz Islands, Solomon Islands6.00.0 Unknown depth.
27[191] Fiji, south of7.0198.0
28[192][193] New Zealand, Gisborne District, North Island6.535.0VI
31[194] China, Hebei Province5.00.0VI Some homes were destroyed. Unknown depth.

References
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  97. "M 6.0 - Solomon Islands". United States Geological Survey. 4 July 1956. Retrieved 11 January 2017.
  98. "M 6.0 - Solomon Islands". United States Geological Survey. 4 July 1956. Retrieved 18 November 2020.
  99. "M 7.7 - Dodecanese Islands, Greece". United States Geological Survey. 9 July 1956. Retrieved 11 January 2017.
  100. "M 7.7 - Dodecanese Islands, Greece". United States Geological Survey. 9 July 1956. Retrieved 18 November 2020.
  101. "Significant Earthquake: GREECE: DODECANESE". National Geophysical Data Center. 9 July 1956. Retrieved 18 November 2020.
  102. "Tsunami Event: CYCLADES". National Geophysical Data Center. 9 July 1956. Retrieved 18 November 2020.
  103. "On-Line Bulletin". International Seismological Centre. 9 July 1956. Retrieved 11 January 2017.
  104. "M 6.2 - Haiti region". United States Geological Survey. 9 July 1956. Retrieved 11 January 2017.
  105. "M 6.2 - Haiti region". United States Geological Survey. 9 July 1956. Retrieved 18 November 2020.
  106. "On-Line Bulletin". International Seismological Centre. 12 July 1956. Retrieved 11 January 2017.
  107. "M 6.8 - Myanmar". United States Geological Survey. 16 July 1956. Retrieved 11 January 2017.
  108. "M 6.8 - Myanmar". United States Geological Survey. 16 July 1956. Retrieved 18 November 2020.
  109. "Significant Earthquake: MYANMAR (BURMA)". National Geophysical Data Center. 16 July 1956. Retrieved 18 November 2020.
  110. "M 6.8 - Banda Sea". United States Geological Survey. 17 July 1956. Retrieved 11 January 2017.
  111. "M 6.8 - Banda Sea". United States Geological Survey. 17 July 1956. Retrieved 18 November 2020.
  112. "On-Line Bulletin". International Seismological Centre. 18 July 1956. Retrieved 11 January 2017.
  113. "M 6.1 - Luzon, Philippines". United States Geological Survey. 19 July 1956. Retrieved 11 January 2017.
  114. "M 6.1 - Luzon, Philippines". United States Geological Survey. 19 July 1956. Retrieved 18 November 2020.
  115. "M 6.0 - Gujarat, India". United States Geological Survey. 21 July 1956. Retrieved 11 January 2017.
  116. "M 6.0 - Gujarat, India". United States Geological Survey. 21 July 1956. Retrieved 18 November 2020.
  117. "Significant Earthquake: INDIA: ANJAR, BHUJ, GANDHIDHAM, KANDLA". National Geophysical Data Center. 21 July 1956. Retrieved 18 November 2020.
  118. "On-Line Bulletin". International Seismological Centre. 22 July 1956. Retrieved 11 January 2017.
  119. "M 6.1 - Crete, Greece". United States Geological Survey. 30 July 1956. Retrieved 11 January 2017.
  120. "M 6.2 - New Britain region, Papua New Guinea". United States Geological Survey. 4 August 1956. Retrieved 11 January 2017.
  121. "M 6.2 - New Britain region, Papua New Guinea". United States Geological Survey. 4 August 1956. Retrieved 18 November 2020.
  122. "On-Line Bulletin". International Seismological Centre. 9 August 1956. Retrieved 11 January 2017.
  123. "M 6.4 - Izu Islands, Japan region". United States Geological Survey. 12 August 1956. Retrieved 11 January 2017.
  124. "M 6.4 - Izu Islands, Japan region". United States Geological Survey. 12 August 1956. Retrieved 18 November 2020.
  125. "On-Line Bulletin". International Seismological Centre. 15 August 1956. Retrieved 11 January 2017.
  126. "On-Line Bulletin". International Seismological Centre. 15 August 1956. Retrieved 11 January 2017.
  127. "Significant Earthquake: CHINA: SHANXI PROVINCE". National Geophysical Data Center. 19 August 1956. Retrieved 18 November 2020.
  128. "M 6.3 - La Paz, Bolivia". United States Geological Survey. 23 August 1956. Retrieved 11 January 2017.
  129. "M 6.3 - La Paz, Bolivia". United States Geological Survey. 23 August 1956. Retrieved 18 November 2020.
  130. "M 6.1 - Fiji". United States Geological Survey. 11 September 1956. Retrieved 11 January 2017.
  131. "On-Line Bulletin". International Seismological Centre. 11 September 1956. Retrieved 11 January 2017.
  132. "On-Line Bulletin". International Seismological Centre. 15 September 1956. Retrieved 11 January 2017.
  133. "M 6.5 - central Afghanistan". United States Geological Survey. 16 September 1956. Retrieved 11 January 2017.
  134. "M 6.5 - central Afghanistan". United States Geological Survey. 16 September 1956. Retrieved 18 November 2020.
  135. "On-Line Bulletin". International Seismological Centre. 17 September 1956. Retrieved 11 January 2017.
  136. "On-Line Bulletin". International Seismological Centre. 19 September 1956. Retrieved 11 January 2017.
  137. "M 7.5 - near the east coast of Honshu, Japan". United States Geological Survey. 29 September 1956. Retrieved 11 January 2017.
  138. "M 7.5 - near the east coast of Honshu, Japan". United States Geological Survey. 29 September 1956. Retrieved 18 November 2020.
  139. "On-Line Bulletin". International Seismological Centre. 3 October 1956. Retrieved 12 January 2017.
  140. "M 6.0 - Tonga". United States Geological Survey. 8 October 1956. Retrieved 12 January 2017.
  141. "On-Line Bulletin". International Seismological Centre. 10 October 1956. Retrieved 12 January 2017.
  142. "On-Line Bulletin". International Seismological Centre. 11 October 1956. Retrieved 12 January 2017.
  143. "Significant Earthquake: RUSSIA: KURIL ISLANDS". National Geophysical Data Center. 11 October 1956. Retrieved 18 November 2020.
  144. "M 6.1 - near the coast of central Peru". United States Geological Survey. 12 October 1956. Retrieved 12 January 2017.
  145. "M 6.1 - near the coast of central Peru". United States Geological Survey. 12 October 1956. Retrieved 18 November 2020.
  146. "M 6.1 - Hokkaido, Japan region". United States Geological Survey. 12 October 1956. Retrieved 12 January 2017.
  147. "On-Line Bulletin". International Seismological Centre. 13 October 1956. Retrieved 12 January 2017.
  148. "M 6.5 - Rat Islands, Aleutian Islands, Alaska". United States Geological Survey. 19 October 1956. Retrieved 12 January 2017.
  149. "M 6.2 - eastern New Guinea region, Papua New Guinea". United States Geological Survey. 22 October 1956. Retrieved 12 January 2017.
  150. "M 6.2 - eastern New Guinea region, Papua New Guinea". United States Geological Survey. 22 October 1956. Retrieved 18 November 2020.
  151. "M 6.7 - Mindoro, Philippines". United States Geological Survey. 23 October 1956. Retrieved 12 January 2017.
  152. "M 6.7 - Mindoro, Philippines". United States Geological Survey. 23 October 1956. Retrieved 18 November 2020.
  153. "M 7.1 - near the coast of Nicaragua". United States Geological Survey. 24 October 1956. Retrieved 12 January 2017.
  154. "M 7.1 - near the coast of Nicaragua". United States Geological Survey. 24 October 1956. Retrieved 18 November 2020.
  155. "M 6.2 - near the coast of Nicaragua". United States Geological Survey. 25 October 1956. Retrieved 12 January 2017.
  156. "M 6.2 - near the coast of Nicaragua". United States Geological Survey. 25 October 1956. Retrieved 18 November 2020.
  157. "M 6.3 - Vanuatu". United States Geological Survey. 26 October 1956. Retrieved 12 January 2017.
  158. "M 6.3 - Vanuatu". United States Geological Survey. 26 October 1956. Retrieved 18 November 2020.
  159. "M 6.3 - Luzon, Philippines". United States Geological Survey. 28 October 1956. Retrieved 12 January 2017.
  160. "M 6.3 - Luzon, Philippines". United States Geological Survey. 28 October 1956. Retrieved 18 November 2020.
  161. "M 6.4 - southern Iran". United States Geological Survey. 31 October 1956. Retrieved 12 January 2017.
  162. "M 6.4 - southern Iran". United States Geological Survey. 31 October 1956. Retrieved 18 November 2020.
  163. "Significant Earthquake: IRAN: BASTAK". National Geophysical Data Center. 31 October 1956. Retrieved 18 November 2020.
  164. "M 5.5 - Aegean Sea". United States Geological Survey. 2 November 1956. Retrieved 12 January 2017.
  165. "M 5.5 - Aegean Sea". United States Geological Survey. 2 November 1956. Retrieved 19 November 2020.
  166. "Significant Earthquake: GREECE: VOLOS-AGRIA (MAGNESIA)". National Geophysical Data Center. 2 November 1956. Retrieved 19 November 2020.
  167. "On-Line Bulletin". International Seismological Centre. 9 November 1956. Retrieved 12 January 2017.
  168. "On-Line Bulletin". International Seismological Centre. 10 November 1956. Retrieved 12 January 2017.
  169. "M 6.0 - Luzon, Philippines". United States Geological Survey. 10 November 1956. Retrieved 12 January 2017.
  170. "M 6.0 - Luzon, Philippines". United States Geological Survey. 10 November 1956. Retrieved 19 November 2020.
  171. "M 6.1 - Merida, Venezuela". United States Geological Survey. 16 November 1956. Retrieved 12 January 2017.
  172. "M 6.1 - Merida, Venezuela". United States Geological Survey. 16 November 1956. Retrieved 19 November 2020.
  173. "M 6.1 - near the east coast of Honshu, Japan". United States Geological Survey. 21 November 1956. Retrieved 12 January 2017.
  174. "M 6.0 - Vanuatu". United States Geological Survey. 25 November 1956. Retrieved 12 January 2017.
  175. "M 6.0 - Vanuatu". United States Geological Survey. 25 November 1956. Retrieved 19 November 2020.
  176. "M 6.0 - Fox Islands, Aleutian Islands, Alaska". United States Geological Survey. 3 December 1956. Retrieved 13 January 2017.
  177. "On-Line Bulletin". International Seismological Centre. 4 December 1956. Retrieved 13 January 2017.
  178. "M 6.5 - Andreanof Islands, Aleutian Islands, Alaska". United States Geological Survey. 8 December 1956. Retrieved 13 January 2017.
  179. "On-Line Bulletin". International Seismological Centre. 15 December 1956. Retrieved 13 January 2017.
  180. "M 6.0 - near the west coast of Colombia". United States Geological Survey. 16 December 1956. Retrieved 13 January 2017.
  181. "M 6.0 - near the west coast of Colombia". United States Geological Survey. 16 December 1956. Retrieved 19 November 2020.
  182. "M 6.8 - Antofagasta, Chile". United States Geological Survey. 18 December 1956. Retrieved 13 January 2017.
  183. "M 6.8 - Antofagasta, Chile". United States Geological Survey. 18 December 1956. Retrieved 19 November 2020.
  184. "M 6.5 - Haida Gwaii Region, Canada". United States Geological Survey. 21 December 1956. Retrieved 13 January 2017.
  185. "M 6.0 - Izu Islands, Japan region". United States Geological Survey. 21 December 1956. Retrieved 19 November 2020.
  186. "M 6.0 - Izu Islands, Japan region". United States Geological Survey. 21 December 1956. Retrieved 19 November 2020.
  187. "M 6.2 - Izu Islands, Japan region". United States Geological Survey. 22 December 1956. Retrieved 19 November 2020.
  188. "M 6.2 - Izu Islands, Japan region". United States Geological Survey. 22 December 1956. Retrieved 19 November 2020.
  189. "On-Line Bulletin". International Seismological Centre. 23 December 1956. Retrieved 13 January 2017.
  190. "On-Line Bulletin". International Seismological Centre. 26 December 1956. Retrieved 13 January 2017.
  191. "On-Line Bulletin". International Seismological Centre. 27 December 1956. Retrieved 13 January 2017.
  192. "M 6.5 - North Island of New Zealand". United States Geological Survey. 28 December 1956. Retrieved 13 January 2017.
  193. "M 6.5 - North Island of New Zealand". United States Geological Survey. 28 December 1956. Retrieved 19 November 2020.
  194. "Significant Earthquake: CHINA: HEBEI PROVINCE". National Geophysical Data Center. 31 December 1956. Retrieved 19 November 2020.
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