Strong mag. 6.6 earthquake - 86 km southeast of Olutanga, Philippines, on Sunday, October 4, 2009 at 10:58 GMT
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Strong magnitude 6.6 earthquake at 620 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
| Date & time | Oct 4, 2009 10:58:00 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.6 |
| Depth | 620.0 km |
| Epicenter latitude / longitude | 6.74°N / 123.378°E  (Celebes Sea, Philippines) |
| Antipode | 6.74°S / 56.622°W |
| Shaking intensity | Weak shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Blit (97 km / 60 mi) |
| Nearby towns and cities | 76 km (47 mi) WNW of Bantogon (pop: 5,380) | Show on map | Quakes nearby 77 km (48 mi) WNW of Kalamansig (Sultan Kudarat) (pop: 12,800) | Show on map | Quakes nearby 110 km (68 mi) WSW of Cotabato City (pop: 179,400) | Show on map | Quakes nearby 121 km (75 mi) S of Pagadian City (pop: 186,900) | Show on map | Quakes nearby 121 km (75 mi) S of Muricay (pop: 132,100) | Show on map | Quakes nearby 128 km (80 mi) WSW of Budta (pop: 1,273,700) | Show on map | Quakes nearby 130 km (81 mi) WSW of Malingao (pop: 1,122,000) | Show on map | Quakes nearby 145 km (90 mi) E of Zamboanga (pop: 457,600) | Show on map | Quakes nearby 164 km (102 mi) W of Koronadal (pop: 125,500) | Show on map | Quakes nearby 913 km (567 mi) SSE of Manila (pop: 1,600,000) | 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 | 620 km | Moro Gulf, 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 (5 quakes)
Date and time | Mag Depth | Location | Details |
| Feb 3, 2010 03:59 12 years ago | 4.5 547 km | 39 km SW of Kalamansig, Province of Sultan Kudarat, Soccsksargen, Philippines | More |
| Jan 13, 2010 12:42 12 years ago | 5.0 10 km | 15 km SW of Laguilayan, Province of Sultan Kudarat, Soccsksargen, Philippines | More |
| Dec 7, 2009 08:02 13 years ago | 4.7 59 km | 24 km NW of Kalamansig, Province of Sultan Kudarat, Soccsksargen, Philippines | More |
| Oct 4, 2009 11:07 13 years ago | 4.9 663 km | 56 km W of Kalamansig, Province of Sultan Kudarat, Soccsksargen, Philippines | More |
| Oct 4, 2009 11:04 13 years ago | 5.6 640 km | 60 km W of Kalamansig, Province of Sultan Kudarat, Soccsksargen, Philippines | More |
Earlier earthquakes in the same area
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