Major magnitude. 7.2 earthquake - South of the Mariana Islands (Guam) on Wednesday, 28 January 1931 at 21:24 (GMT)

Major magnitude. 7.2 earthquake  - South of the Mariana Islands (Guam) on Wednesday, 28 January 1931 at 21:24 (GMT)

Major magnitude 7.2 earthquake at 15 km depth

Date & time: 28 Jan 1931 09:24:12 UTC###AGESTRINGCOPY###
Magnitude: 7.2
Depth: 15.0 km
Epicenter latitude / longitude: 10.888°N / 144.357°E (Guam)
Nearby towns and cities:
269 km (167 mi) S of Inarajan Village (pop: 3,050)
280 km (174 mi) S of Santa Rita Village (pop: 7,500)
288 km (179 mi) S of Chalan Pago-Ordot Village (pop: 6,820)
297 km (185 mi) S of Dededo Village (pop: 44,900)
300 km (187 mi) S of Yigo Village (pop: 20,500)
474 km (295 mi) SSW of San Jose (Northern Mariana Islands) (pop: 15,000)
504 km (313 mi) SSW of Saipan (Northern Mariana Islands) (pop: 48,200)
699 km (435 mi) ENE of Colonia (Yap, Micronesia) (pop: 7,370)
Primary data source: USGS
Estimated released energy: 4 x 1015 joules (1106 gigawatt hours, equivalent to 9.5 x 105 tons of TNT or 59.5 atomic bombs!) More info
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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.
M 7.215 kmsouth of the Mariana Islands (Guam)USGS
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 yet. If you felt it be the first to report it!
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Aftershocks of the 7.2 quake South of the Mariana Islands (Guam) 28 January 21:24 UTC

More info
Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.

Earlier earthquakes in the same area

Major magnitude. 7.2 earthquake - South of the Mariana Islands (Guam) on Wednesday, 28 January 1931 at 21:24 (GMT)
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