Very strong mag. 6.5 earthquake - Philippine Sea, 9.3 km northeast of Palanas, Philippines, on Sunday, August 18, 1957 at 08:37 (GMT)
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Very strong magnitude 6.5 earthquake at 20 km depth
Depth: 20.0 km
Epicenter latitude / longitude: 12.221°N / 123.959°E↗ (Philippine Sea, Philippines)
Antipode: 12.221°S / 56.041°W↗
Nearest volcano: Gate Mountains (42 km / 26 mi)
Nearby towns and cities:
19 km (12 mi) E of Uson (pop: 4,400) --> See nearby quakes!
25 km (15 mi) N of Cataingan (Masbate) (pop: 7,810) --> See nearby quakes!
40 km (25 mi) ESE of Masbate (pop: 47,500) --> See nearby quakes!
51 km (32 mi) S of Bulan (Sorsogon) (pop: 28,500) --> See nearby quakes!
54 km (33 mi) S of Irosin (pop: 20,700) --> See nearby quakes!
71 km (44 mi) WNW of Calbayog City (pop: 67,900) --> See nearby quakes!
80 km (50 mi) WSW of Catarman (pop: 47,400) --> See nearby quakes!
84 km (52 mi) S of Sorsogon (pop: 82,700) --> See nearby quakes!
205 km (127 mi) NNE of Bacolod City (pop: 454,900) --> See nearby quakes!
417 km (259 mi) SE of Manila (pop: 1,600,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 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.
|6.5||20 km||Masbate region, 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 (0 quakes)
So far, no aftershocks have been registered.