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M6.5 earthquake, Philippines, 1983-08-17

MagnitudeM6.5ms

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Depth29 km

Time (UTC)1983-08-17 12:17

Rank in 198348 / 136among M6+

Rank since 19004331 / 14,458

Energy vs an M6×6approx.

16 km ENE of Piddig, Philippines · 18.23, 120.86

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

2022 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1983-08-02	1983-08-02 02:17	158 km	13 km E of Basco, Philippines
M6.0 1982-12-28	1982-12-28 13:49	34 km	81 km SW of Basco, Philippines
M6.2 1982-04-17	1982-04-17 09:20	10 km	147 km N of Pagudpud, Philippines
M6.5 1981-11-22	1981-11-22 15:05	24 km	21 km NNE of Pagudpud, Philippines
M6.3 1980-03-31	1980-03-31 12:41	43 km	34 km SE of Dumabato, Philippines
M7.1 1979-08-26	1979-08-26 14:31	15 km	62 km N of San Vicente, Philippines
M6.0 1978-01-06	1978-01-06 04:41	33 km	41 km NW of San Vicente, Philippines
M6.2 1977-08-29	1977-08-29 14:23	12 km	54 km W of Fuerte, Philippines
M6.9 1977-07-21	1977-07-21 13:45	33 km	22 km SSW of Dicabisagan, Philippines
M7.0 1977-03-18	1977-03-18 21:43	37 km	34 km E of Dicamay, 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.