Very strong mag. 6.6 earthquake - 16 km southwest of Catarman, Northern Samar, Eastern Visayas, Philippines, on Thursday, November 17, 1988 at 06:55 (GMT)

Very strong mag. 6.6 earthquake - 16 km southwest of Catarman, Northern Samar, Eastern Visayas, Philippines, on Thursday, November 17, 1988 at 06:55 (GMT)

Very strong magnitude 6.6 earthquake at 19 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Nov 17, 1988 06:55:46 UTC
Magnitude: 6.6
Depth: 19.3 km
Epicenter latitude / longitude: 12.399°N / 124.537°E (Northern Samar, Eastern Visayas, Philippines)
Antipode: 12.399°S / 55.463°W
Nearest volcano: Gate Mountains (63 km / 39 mi)
Nearby towns and cities:
16 km (10 mi) SW of Catarman (pop: 47,400) --> See nearby quakes!
38 km (23 mi) N of Calbayog City (pop: 67,900) --> See nearby quakes!
55 km (34 mi) WSW of Laoang (Northern Samar) (pop: 16,700) --> See nearby quakes!
64 km (40 mi) ESE of Irosin (Bicol) (pop: 20,700) --> See nearby quakes!
78 km (48 mi) ESE of Bulan (Sorsogon, Bicol) (pop: 28,500) --> See nearby quakes!
79 km (49 mi) NNW of Catbalogan (pop: 68,100) --> See nearby quakes!
87 km (54 mi) SE of Sorsogon (Bicol) (pop: 82,700) --> See nearby quakes!
99 km (62 mi) E of Masbate (Bicol) (pop: 47,500) --> See nearby quakes!
259 km (161 mi) NE of Bacolod City (Western Visayas) (pop: 454,900) --> See nearby quakes!
456 km (283 mi) ESE of Manila (National Capital Region) (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
6.619 kmSamar, PhilippinesUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.
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Aftershocks

[More info]

Recorded aftershocks, latest first (8 quakes)

Date and timeMag
Depth
LocationDetails
Feb 4, 1989 12:12
33 years ago
4.9

105 km
Philippine Sea, 13 km NE of Biri Island, PhilippinesMore
Feb 2, 1989 02:18
33 years ago
4.8

33 km
Philippine Sea, 2.5 km N of Owacon Island, PhilippinesMore
Jan 9, 1989 05:26
33 years ago
4.6

33 km
Philippine Sea, 4.8 km NE of Macalayo Island, PhilippinesMore
Dec 28, 1988 05:53
33 years ago
5.0

33 km
Samar, PhilippinesMore
Dec 4, 1988 08:29
33 years ago
5.2

33 km
Philippine Sea, 92 km E of Legazpi, Province of Albay, Bicol, PhilippinesMore
Nov 24, 1988 04:25
33 years ago
5.4

33 km
Philippine Sea, 31 km E of Laoang, Northern Samar, Eastern Visayas, PhilippinesMore
Nov 22, 1988 04:35
33 years ago
4.9

33 km
Samar, PhilippinesMore
Nov 20, 1988 20:15
33 years ago
4.4

60 km
Philippine Sea, 28 km NE of Catarman, PhilippinesMore

Earlier earthquakes in the same area

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