Moderate mag. 4.3 earthquake - 30 mi east of Port Heiden, Lake and Peninsula County, Alaska, USA, on 2016-04-01 22:00:48 -08:00
This quake was likely an aftershock of the 6.2 quake 29 mi northeast of Port Heiden, Lake and Peninsula County, Alaska, USA, 2 April 2016 05:50 GMT, which had occurred 11 minutes earlier.
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Moderate magnitude 4.3 earthquake at 0 km depth
2 Apr 06:30 UTC: First to report: USGS after 29 minutes.
Apr 2 06:56: Magnitude recalculated from 4.5 to 4.3.
Hypocenter depth recalculated from 6.9 to 0.1 km.
Apr 2 06:56: Magnitude recalculated from 4.5 to 4.3.
Hypocenter depth recalculated from 6.9 to 0.1 km.
Date & time: 2 Apr 2016 06:00:48 UTC
Local time at epicenter: 2016-04-01 22:00:48 -08:00
Magnitude: 4.3
Depth: 0.1 km
Epicenter latitude / longitude: 57.0463°N / 157.8486°W
(Lake and Peninsula County, Alaska, United States)Nearest volcano: Aniakchak (29 km / 18 mi)
Nearby towns and cities:
49 km (30 mi) ENE of Port Heiden (pop: 98) --> See nearby quakes!
59 km (36 mi) SSW of Ugashik (pop: 12) --> See nearby quakes!
251 km (156 mi) NE of Sand Point (pop: 1,060) --> See nearby quakes!
324 km (202 mi) WSW of Kodiak Station (pop: 1,300) --> See nearby quakes!
336 km (209 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
467 km (290 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
473 km (294 mi) SSE of Bethel (pop: 6,450) --> See nearby quakes!
532 km (331 mi) SW of Kalifornsky (pop: 7,850) --> See nearby quakes!
544 km (338 mi) SW of Kenai (pop: 7,660) --> See nearby quakes!
648 km (403 mi) SW of Anchorage (pop: 298,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 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.
| Magnitude | Depth | Location | Source |
| M 4.3 | 0.1 km | - 104km NNE of Chignik Lake, Alaska | USGS |
| M 4.5 | 1 km | ALASKA PENINSULA | EMSC |
(shakemap: USGS)
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Togiak (United States, 269 km NW of epicenter) : Shook the apartment I live in and my neighbors for sure for about 5-10 seconds. Nothing fell, but I could hear stuff moving and my dog noticed! (reported through EMSC)
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