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M7.7 earthquake, Puerto Rico, 1943-07-29

MagnitudeM7.7mw

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Depth15 km

Time (UTC)1943-07-29 03:02

Rank in 19434 / 113among M6+

Rank since 1900250 / 14,458

Energy vs an M6×355approx.

45 km N of San Antonio, Puerto Rico · 18.91, -67.12

M6.5+ within 300 km (largest first)

1946 M7.8M7.8

1943 M7.7M7.7

1948 M7.1M7.1

1918 M7.1M7.1

1946 M7.0M7.0

1984 M6.9M6.9

1917 M6.8M6.8

1916 M6.8M6.8

1948 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1939-06-12	1939-06-12 04:05	15 km	220 km N of San Juan, Puerto Rico
M6.3 1922-12-18	1922-12-18 12:35	15 km	58 km E of Punta Cana, Dominican Republic
M6.4 1920-02-10	1920-02-10 22:07	15 km	32 km NW of Aguadilla, Puerto Rico
M6.2 1919-09-06	1919-09-06 09:29	15 km	131 km NNE of Cruz Bay, U.S. Virgin Islands
M6.1 1918-11-12	1918-11-12 21:44	15 km	18 km NNW of San Antonio, Puerto Rico
M6.3 1918-10-25	1918-10-25 03:42	15 km	6 km WNW of Aguadilla, Puerto Rico
M6.1 1918-10-11	1918-10-11 17:03	15 km	15 km WNW of San Antonio, Puerto Rico
M7.1 1918-10-11	1918-10-11 14:14	15 km	24 km NNW of San Antonio, Puerto Rico
M6.8 1917-07-27	1917-07-27 01:01	15 km	94 km NE of Punta Cana, Dominican Republic
M6.4 1916-11-30	1916-11-30 03:18	15 km	52 km NE of Samaná, Dominican Republic

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.