Very strong mag. 6.3 earthquake - Sulu Sea, 50 km west of Pandan, Philippines, on Tuesday, October 21, 1975 at 23:06 (GMT)
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Very strong magnitude 6.3 earthquake at 33 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Depth: 33.0 km
Epicenter latitude / longitude: 11.661°N / 121.646°E↗ (Sulu Sea, Philippines)
Antipode: 11.661°S / 58.354°W↗
Nearest volcano: Malindig (180 km / 112 mi)
Nearby towns and cities:
29 km (18 mi) WSW of Union (pop: 2,290) --> See nearby quakes!
45 km (28 mi) SW of Manoc-Manoc (pop: 5,990) --> See nearby quakes!
48 km (30 mi) WSW of Gibong (Aklan) (pop: 6,920) --> See nearby quakes!
50 km (31 mi) W of Pandan (Antique) (pop: 34,000) --> See nearby quakes!
78 km (49 mi) W of Kalibo Town (pop: 56,800) --> See nearby quakes!
98 km (61 mi) SSE of Mansalay (Oriental Mindoro) (pop: 23,000) --> See nearby quakes!
99 km (62 mi) SE of San Jose (pop: 118,800) --> See nearby quakes!
121 km (75 mi) W of Roxas City (pop: 102,700) --> See nearby quakes!
180 km (112 mi) NW of Bacolod City (pop: 454,900) --> See nearby quakes!
335 km (208 mi) SSE of Manila (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) More info
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.
|6.3||33 km||Panay, Philippines||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Recorded aftershocks, latest first (2 quakes)
- 22 Oct 1975 16:19 UTC| M 4.5 |60 km (37.3 mi) depth|20 km (13 mi) distance| USGS | Details
- 22 Oct 1975 15:59 UTC| M 5.8 |33 km (20.5 mi) depth|3 km (2 mi) distance| USGS | Details