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Minor mag. 3.1 earthquake - 25 mi west of Anchor Point, Kenai Peninsula, Alaska, USA, on Wednesday, Aug 3, 2022 at 11:47 pm (GMT -8) -

Minor mag. 3.1 earthquake - 25 mi west of Anchor Point, Kenai Peninsula, Alaska, USA, on Wednesday, Aug 3, 2022 at 11:47 pm (GMT -8) Minor mag. 3.1 earthquake - 25 mi west of Anchor Point, Kenai Peninsula, Alaska, USA, on Wednesday, Aug 3, 2022 at 11:47 pm (GMT -8)

Minor magnitude 3.1 earthquake at 84 km depth

4 Aug 07:50 UTC: First to report: USGS after 2 minutes.
Update Thu, 4 Aug 2022, 07:54

Small magnitude 3.1 earthquake 25 miles west of Anchor Point, Alaska, United States

3.1 quake 3 Aug 11:47 pm (GMT -8)
3.1 quake 3 Aug 11:47 pm (GMT -8)
An earthquake of magnitude 3.1 occurred only 6 minutes ago 25 miles west of Anchor Point, Alaska, United States, the United States Geological Survey reported.
The quake hit at an intermediate depth of 52 miles beneath the epicenter near Anchor Point, Kenai Peninsula, Alaska, USA, late at night on Wednesday, August 3rd, 2022, at 11:47 pm local time. 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 citizen-seismograph network of RaspberryShake, which listed it as a magnitude 3.1 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.1.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Anchor Point (pop. 1,900, 25 miles away), Diamond Ridge (pop. 1,200, 35 miles away), Homer (pop. 5,500, 36 miles away), and Fritz Creek (pop. 1,900, 44 miles away), the quake was probably not felt.

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Earthquake details

Date & timeAug 4, 2022 07:47:36 UTC -
Local time at epicenterWednesday, Aug 3, 2022 at 11:47 pm (GMT -8)
Depth84.1 km
Epicenter latitude / longitude59.7322°N / 152.557°W (Gulf of Alaska, Alaska, United States)
Antipode59.732°S / 27.443°E
Shaking intensityNot felt
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoIliamna (45 km / 28 mi)
Nearby towns and cities41 km (25 mi) W of Anchor Point (pop: 1,930) | Show on map | Quakes nearby
57 km (36 mi) W of Homer (pop: 5,520) | Show on map | Quakes nearby
71 km (44 mi) W of Fritz Creek (pop: 1,930) | Show on map | Quakes nearby
104 km (64 mi) SW of Kalifornsky (pop: 7,850) | Show on map | Quakes nearby
116 km (72 mi) SW of Kenai (pop: 7,660) | Show on map | Quakes nearby
118 km (73 mi) SW of Soldotna (pop: 4,540) | Show on map | Quakes nearby
128 km (79 mi) SSW of Nikiski (pop: 4,490) | Show on map | Quakes nearby
134 km (83 mi) SW of Sterling (pop: 5,620) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 12.6°C (55 F), humidity: 88%, wind: 3 m/s (5 kts) from S
Estimated seismic energy released2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 tons of TNT) | about seismic energy
Show interactive Map
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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.
3.184 km41 Km W of Anchor Point, AlaskaUSGS
3.184 kmSouthern AlaskaRaspberryShake


Seismic station: Iliamna Volcano, Alaska (ILCB/AV network) | Distance from quake: 28 km / 17 mi | Show on map | Station Info
Seismic station Iliamna Volcano, Alaska: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake.

Earlier earthquakes in the same area

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