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Strong mag. 6.4 earthquake - 50 km northwest of Pulau Dumarehe Island, North Sulawesi, Indonesia, on Thursday, May 8, 1986 at 14:37 GMT

Strong mag. 6.4 earthquake - 50 km northwest of Pulau Dumarehe Island, North Sulawesi, Indonesia, on Thursday, May 8, 1986 at 14:37 GMT Strong mag. 6.4 earthquake - 50 km northwest of Pulau Dumarehe Island, North Sulawesi, Indonesia, on Thursday, May 8, 1986 at 14:37 GMT

Strong magnitude 6.4 earthquake at 166 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.

Earthquake details

Date & timeMay 8, 1986 14:37:35 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.4
Depth165.5 km
Epicenter latitude / longitude4.627°N / 125.499°E (Philippine Sea, Indonesia)
Antipode4.627°S / 54.501°W
Shaking intensityLight shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoNorth Kawio (7 km / 4 mi)
Nearby towns and cities86 km (54 mi) S of Sarangani (Davao del Sur, Philippines) (pop: 7,510) | Show on map | Quakes nearby
137 km (85 mi) SSE of Glan (Sarangani, Philippines) (pop: 24,300) | Show on map | Quakes nearby
151 km (94 mi) S of Malapatan (Sarangani, Philippines) (pop: 19,400) | Show on map | Quakes nearby
166 km (103 mi) S of Alabel (Philippines) (pop: 43,300) | Show on map | Quakes nearby
169 km (105 mi) SSE of General Santos City (Philippines) (pop: 679,600) | Show on map | Quakes nearby
184 km (114 mi) SSE of Polomolok (Philippines) (pop: 64,000) | Show on map | Quakes nearby
185 km (115 mi) S of Maluñgun (Philippines) (pop: 52,200) | Show on map | Quakes nearby
198 km (123 mi) SSE of Lake Sebu (Philippines) (pop: 21,800) | Show on map | Quakes nearby
199 km (124 mi) S of Malita (Philippines) (pop: 41,100) | Show on map | Quakes nearby
199 km (124 mi) SSE of Tupi (South Cotabato, Philippines) (pop: 16,500) | Show on map | Quakes nearby
Estimated seismic energy released2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy
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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
6.4166 kmKepulauan Sangihe, IndonesiaUSGS
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 (6 quakes)

Date and timeMag
Depth
LocationDetails
Oct 18, 1986 08:54
36 years ago
5.2

201 km
85 km S of Glan, Sarangani, Soccsksargen, PhilippinesMore
Oct 15, 1986 05:56
36 years ago
3.7

209 km
49 km S of Olanivan Island, Province of Davao del Sur, PhilippinesMore
Sep 12, 1986 11:27
36 years ago
5.2

33 km
98 km S of Alabel, Sarangani, Soccsksargen, PhilippinesMore
Aug 4, 1986 06:24
36 years ago
5.1

33 km
42 km SE of Pulau Dumarehe Island, North Sulawesi, IndonesiaMore
May 19, 1986 17:58
36 years ago
5.2

33 km
27 km S of Pulau Dumarehe Island, North Sulawesi, IndonesiaMore
May 9, 1986 01:56
36 years ago
4.8

33 km
23 km SW of Olanivan Island, Province of Davao del Sur, PhilippinesMore

Earlier earthquakes in the same area

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