Moderate mag. 4.0 earthquake - North Pacific Ocean, 121 mi southeast of Adak, Aleutians West County, Alaska, USA, on Monday, April 21, 2014 00:56:27
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Moderate magnitude 4.0 earthquake at 10 km depth
21 Apr 13:51 UTC: First to report: USGS after 55 minutes.
Date & time: 21 Apr 2014 12:56:27 UTC
Local time at epicenter: Monday, April 21, 2014 00:56:27
Depth: 10.0 km
Epicenter latitude / longitude: 51.0487°N / 174.1651°W (North Pacific Ocean, Alaska, United States)
Nearest volcano: Sergief (124 km / 77 mi)
Nearby towns and cities:
128 km (79 mi) S of Atka (pop: 64) --> See nearby quakes!
194 km (121 mi) ESE of Adak (pop: 332) --> See nearby quakes!
420 km (261 mi) WSW of Nikolski (pop: 18) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 tons of TNT) 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.
|M 4.0||10 km||127km S of Atka, Alaska||USGS|
|M 4.0||10 km||ANDREANOF ISLANDS, ALEUTIAN IS.||EMSC|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.