1940 New Hampshire earthquakes
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The 1940 New Hampshire earthquakes struck on December 20 and again on December 24. Both shocks had an estimated Ms magnitude of 5.6, and a maximum Mercalli intensity of VII (Very strong). These doublet earthquakes were the largest to hit the state in several hundred years. Damage included minor fractures or knocked over chimneys in a zone extending through New Hampshire and four other states: Maine, New York, Vermont and Massachusetts.[7]
Quick Facts UTC time, ISC event ...
UTC time | Doublet earthquake: |
---|---|
A: 1940-12-20 07:27:26 | |
B: 1940-12-24 13:43:44 | |
ISC event | |
A: 901740 | |
B: 901745 | |
USGS-ANSS | n/a |
Local date | |
A: 20 December 1940 (1940-12-20) | |
B: 24 December 1940 (1940-12-24) | |
Local time | |
A: 02:27:26 [1] | |
B: 08:43:44 [2] | |
Magnitude | |
A: 5.5 mN[3] 5.6 MGR(PAS) ,[4] 5.25 Mw (est.)[5] | |
B: 5.5 mN[3] 5.6 MGR(PAS) [6] 5.50 Mw (est.)[5] | |
Depth | 35 km (22 mi)[4] |
Epicenter | 43.83°N 71.28°W / 43.83; -71.28 [3] |
Type | Unknown |
Areas affected | New England United States |
Max. intensity | MMI VII (Very strong) [3] |
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