Weak mag. 3.0 earthquake - Matanuska-Susitna Parish, 22 mi north of Alaska City, Anchorage, Alaska, USA, on Thursday, Apr 22, 2021 5:52 pm (GMT -8) -

Weak mag. 3.0 earthquake - Matanuska-Susitna Parish, 22 mi north of Alaska City, Anchorage, Alaska, USA, on Thursday, Apr 22, 2021 5:52 pm (GMT -8)

Weak magnitude 3.0 earthquake at 42 km depth

23 Apr 01:55 UTC: First to report: EMSC after 3 minutes.
23 Apr 01:55: Now using data updates from USGS
... [show all] ...
23 Apr 14:12: Magnitude recalculated from 3.1 to 3.0. Hypocenter depth recalculated from 33.9 to 42.0 km (from 21 to 26 mi). Epicenter location corrected by 6.2 km (3.8 mi) towards NNW.
Update Fri, 23 Apr 2021, 02:00
Small magnitude 3.1 earthquake 19 miles north of Anchorage, Alaska, United States
3.1 quake 22 Apr 5:52 pm (GMT -8)
3.1 quake 22 Apr 5:52 pm (GMT -8)
An earthquake of magnitude 3.1 occurred in the afternoon on Thursday 22 April 2021 at 5:52 pm local time near Anchorage, Alaska, USA, as reported by the United States Geological Survey.
According to preliminary data, the quake was located at a moderately shallow depth of 21 miles. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.1 earthquake as well.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Big Lake (pop. 3,400, 3 miles away), Knik-Fairview (pop. 14,900, 13 miles away), Meadow Lakes (pop. 7,600, 16 miles away), Eagle River (pop. 24,800, 18 miles away), Eagle River (pop. 24,800, 18 miles away), Anchorage (pop. 298,700, 19 miles away), Wasilla (pop. 9,300, 19 miles away), Elmendorf Air Force Base (pop. 6,600, 20 miles away), and Tanaina (pop. 8,200, 21 miles away), the quake was probably not felt.
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Earthquake data

Date & time: Apr 23, 2021 01:52:07 UTC -
Local time at epicenter: Thursday, Apr 22, 2021 5:52 pm (GMT -8)
Magnitude: 3
Depth: 42.0 km
Epicenter latitude / longitude: 61.5345°N / 150.0296°W (Matanuska-Susitna, Alaska, United States)
Antipode: 61.535°S / 29.97°E
Nearest volcano: Spurr (122 km / 76 mi)
Nearby towns and cities:
4 km (3 mi) WNW of Big Lake (pop: 3,350) --> See nearby quakes!
15 km (10 mi) SW of Houston (pop: 2,210) --> See nearby quakes!
23 km (14 mi) W of Knik-Fairview (pop: 14,900) --> See nearby quakes!
24 km (15 mi) S of Willow (pop: 2,100) --> See nearby quakes!
25 km (15 mi) WSW of Meadow Lakes (pop: 7,570) --> See nearby quakes!
34 km (21 mi) NW of Eagle River (pop: 24,800) --> See nearby quakes!
34 km (21 mi) NW of Eagle River (Anchorage) (pop: 24,800) --> See nearby quakes!
36 km (22 mi) NNW of Alaska City (pop: 298,700) --> See nearby quakes!
39 km (24 mi) WSW of Lakes (pop: 8,360) --> See nearby quakes!
939 km (583 mi) WNW of Juneau (pop: 32,800) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 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.
Mag.DepthLocationSource
3.042 km3 Km SW of Big Lake, Alaska, USAUSGS
3.235 kmSOUTHERN ALASKA, USAEMSC

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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Eagle River, Anchorage, Alaska (33.5 km SE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s (reported through our app)
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