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M7.1 earthquake, Philippines, 1938-05-23

MagnitudeM7.1mw

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Depth15 km

Time (UTC)1938-05-23 08:21

Rank in 193817 / 149among M6+

Rank since 19001291 / 14,458

Energy vs an M6×40approx.

41 km W of Pagsanahan Norte, Philippines · 17.99, 120.06

M6.5+ within 300 km (largest first)

1990 M7.7M7.7

1968 M7.6M7.6

1934 M7.5M7.5

1970 M7.4M7.4

1999 M7.3M7.3

1949 M7.2M7.2

1948 M7.1M7.1

1979 M7.1M7.1

1906 M7.1M7.1

1938 M7.1M7.1

1977 M7.0M7.0

1985 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1938-04-01	1938-04-01 21:31	15 km	158 km NNW of Pagudpud, Philippines
M6.2 1938-03-31	1938-03-31 22:31	15 km	142 km NNW of Pagudpud, Philippines
M6.0 1937-08-15	1937-08-15 04:27	35 km	76 km NNW of Claveria, Philippines
M6.1 1935-07-07	1935-07-07 13:23	15 km	104 km WNW of Pagsanahan Norte, Philippines
M6.0 1935-01-11	1935-01-11 00:08	15 km	68 km NW of Davila, Philippines
M7.5 1934-02-14	1934-02-14 03:59	15 km	113 km W of Cabittaogan, Philippines
M6.1 1932-08-24	1932-08-24 12:10	15 km	4 km NE of Caba, Philippines
M6.1 1932-06-14	1932-06-14 05:59	35 km	30 km NE of Piddig, Philippines
M6.1 1932-06-13	1932-06-13 20:57	15 km	112 km WNW of Pagsanahan Norte, Philippines
M6.2 1931-10-28	1931-10-28 05:35	25 km	35 km NNE of Pagudpud, Philippines

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.