Moderate mag. 4.5 earthquake - North Pacific Ocean, 348 mi southwest of Unalaska, Aleutians West (CA) County, Alaska, USA, on Saturday, 4 April 2015 at 11:07 (GMT)

Moderate mag. 4.5 earthquake - North Pacific Ocean, 348 mi southwest of Unalaska, Aleutians West (CA) County, Alaska, USA, on Saturday, 4 April 2015 at 11:07 (GMT)

Moderate magnitude 4.5 earthquake at 2 km depth

4 Apr 12:10 UTC: First to report: EMSC after 1 hour and 2 minutes.
Apr 4 22:10: Magnitude recalculated from 4.4 to 4.5.
Hypocenter depth recalculated from 10.0 to 2.0 km.
Date & time: 4 Apr 2015 11:07:46 UTC
Magnitude: 4.5
Depth: 2.0 km
Epicenter latitude / longitude: 50.82°N / 173.09°W (North Pacific Ocean, United States)
Nearest volcano: Seguam (202 km / 126 mi)
Nearby towns and cities:
171 km (106 mi) SSE of Atka (pop: 64) --> See nearby quakes!
273 km (169 mi) ESE of Adak (pop: 332) --> See nearby quakes!
374 km (232 mi) SW of Nikolski (pop: 18) --> See nearby quakes!
560 km (348 mi) SW of Unalaska (pop: 4,490) --> See nearby quakes!
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 tons of TNT) 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.
MagnitudeDepthLocationSource
M 4.52 kmANDREANOF ISLANDS, ALEUTIAN IS.EMSC
M 4.410 km193km SSE of Atka, AlaskaUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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