Very strong mag. 6.6 earthquake - 53 km south of General Santos City, Philippines, on Tuesday, June 17, 1986 at 18:13 GMT
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Very strong magnitude 6.6 earthquake at 32 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
| Date & time | Jun 17, 1986 18:13:11 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.6 |
| Depth | 31.9 km |
| Epicenter latitude / longitude | 5.644°N / 125.259°E  (Celebes Sea, Philippines) |
| Antipode | 5.644°S / 54.741°W |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Balut (30 km / 19 mi) |
| Nearby towns and cities | 7 km (4 mi) SSW of Pangyan (Sarangani) (pop: 5,260) | Show on map | Quakes nearby 21 km (13 mi) SSE of Glan (Sarangani) (pop: 24,300) | Show on map | Quakes nearby 36 km (23 mi) S of Malapatan (Sarangani) (pop: 19,400) | Show on map | Quakes nearby 51 km (32 mi) S of Alabel (pop: 43,300) | Show on map | Quakes nearby 53 km (33 mi) S of General Santos City (pop: 679,600) | Show on map | Quakes nearby 68 km (42 mi) SSE of Polomolok (pop: 64,000) | Show on map | Quakes nearby 71 km (44 mi) S of Maluñgun (pop: 52,200) | Show on map | Quakes nearby 94 km (59 mi) SSW of Malita (pop: 41,100) | Show on map | Quakes nearby 164 km (102 mi) SSW of Central (pop: 1,212,500) | Show on map | Quakes nearby 196 km (122 mi) SSE of Budta (pop: 1,273,700) | Show on map | Quakes nearby |
| Estimated seismic energy released | 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 atomic bombs!) | about seismic energy |
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. | Depth | Location | Source |
| 6.6 | 32 km | Mindanao, Philippines | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Aftershocks
[More info]
Recorded aftershocks, latest first (8 quakes)
Date and time | Mag Depth | Location | Details |
| Oct 29, 1986 20:11 36 years ago | 5.6 72 km | Sarangani, 47 km SE of General Santos City, Philippines | More |
| Oct 18, 1986 08:54 36 years ago | 5.2 201 km | 85 km S of Glan, Sarangani, Soccsksargen, Philippines | More |
| Oct 15, 1986 05:56 36 years ago | 3.7 209 km | 49 km S of Olanivan Island, Province of Davao del Sur, Philippines | More |
| Sep 12, 1986 11:27 36 years ago | 5.2 33 km | 98 km S of Alabel, Sarangani, Soccsksargen, Philippines | More |
| Sep 6, 1986 23:06 36 years ago | 5.3 109 km | 122 km SE of Alabel, Sarangani, Soccsksargen, Philippines | More |
| Jul 19, 1986 04:35 36 years ago | 5.0 145 km | 81 km E of Alabel, Sarangani, Soccsksargen, Philippines | More |
| Jul 12, 1986 10:17 36 years ago | 5.5 88 km | Davao Occidental, 65 km SE of General Santos City, Philippines | More |
| Jun 18, 1986 05:26 36 years ago | 4.6 87 km | 27 km NE of Olanivan Island, Province of Davao del Sur, Philippines | More |
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