Weak mag. 3.0 earthquake - Matanuska-Susitna Parish, 32 mi north of Alaska City, Anchorage, Alaska, USA, on Saturday, Sep 4, 2021 10:21 pm (GMT -8) -

Weak mag. 3.0 earthquake - Matanuska-Susitna Parish, 32 mi north of Alaska City, Anchorage, Alaska, USA, on Saturday, Sep 4, 2021 10:21 pm (GMT -8)

Weak magnitude 3.0 earthquake at 15 km depth

5 Sep 06:24 UTC: First to report: USGS after 3 minutes.
5 Sep 06:27: Magnitude recalculated from 3.1 to 3.0. Hypocenter depth recalculated from 32.6 to 15.4 km (from 20 to 9.6 mi). Epicenter location corrected by 19 km (12 mi) towards WNW.
Update Sun, 5 Sep 2021, 06:33
Small tremor of magnitude 3.0 just reported 32 miles northwest of Alaska City, Alaska, United States
3.0 quake 4 Sep 10:21 pm (GMT -8)
3.0 quake 4 Sep 10:21 pm (GMT -8)
Just 12 minutes ago, a 3.0-magnitude earthquake struck near Alaska City, Anchorage, Alaska, USA. The tremor was recorded late at night on Saturday, September 4th, 2021, at 10:21 pm local time, at a shallow depth of 9.6 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.0 earthquake as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Willow (pop. 2,100) located 10 miles from the epicenter, Big Lake (pop. 3,400) 13 miles away, and Houston (pop. 2,200) 14 miles away. In Meadow Lakes (pop. 7,600, 21 miles away), Knik-Fairview (pop. 14,900, 23 miles away), Wasilla (pop. 9,300, 27 miles away), Alaska City (pop. 298,700, 32 miles away), Eagle River (pop. 24,800, 32 miles away), and Eagle River (pop. 24,800, 32 miles away), the quake was probably not felt.

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Earthquake data

Date & time: Sep 5, 2021 06:21:25 UTC -
Local time at epicenter: Saturday, Sep 4, 2021 10:21 pm (GMT -8)
Magnitude: 3
Depth: 15.4 km
Epicenter latitude / longitude: 61.6443°N / 150.2482°W (Matanuska-Susitna, Alaska, United States)
Antipode: 61.644°S / 29.752°E
Nearest volcano: Spurr (113 km / 70 mi)
Nearby towns and cities:
16 km (10 mi) SW of Willow (pop: 2,100) --> See nearby quakes!
21 km (13 mi) NW of Big Lake (pop: 3,350) --> See nearby quakes!
23 km (14 mi) W of Houston (pop: 2,210) --> See nearby quakes!
34 km (21 mi) W of Meadow Lakes (pop: 7,570) --> See nearby quakes!
37 km (23 mi) WNW of Knik-Fairview (pop: 14,900) --> See nearby quakes!
50 km (31 mi) W of Lakes (pop: 8,360) --> See nearby quakes!
51 km (32 mi) NNW of Alaska City (pop: 298,700) --> See nearby quakes!
51 km (32 mi) NW of Eagle River (pop: 24,800) --> See nearby quakes!
51 km (32 mi) NW of Eagle River (Anchorage) (pop: 24,800) --> See nearby quakes!
60 km (37 mi) W of Palmer (pop: 6,790) --> See nearby quakes!
Weather at epicenter at time of quake:
Light Rain 12.2°C (54 F), humidity: 96%, wind: 0 m/s (0 kts)
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.
3.015 km15 Km SW of Willow, AlaskaUSGS

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Tanaina, Alaska (42.3 km E of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s (reported through our app)
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Earlier earthquakes in the same area

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