Light mag. 4.1 earthquake - Bering Sea, 55 mi northeast of Adak, Aleutians West, Alaska, USA, on Friday, Aug 5, 2022 at 11:17 pm (GMT -9) -
Light magnitude 4.1 earthquake at 224 km depth
6 Aug 08:32 UTC: First to report: USGS after 15 minutes.
Update Sat, 6 Aug 2022, 08:36
Moderate earthquake of magnitude 4.1 just reported 55 miles northeast of Adak, Alaska, United States4.1 quake 5 Aug 11:17 pm (GMT -9)
The United States Geological Survey reported a magnitude 4.1 quake in the United States near Adak, Aleutians West, Alaska, only 19 minutes ago. The earthquake hit late at night on Friday, August 5th, 2022, at 11:17 pm local time at an intermediate to considerable depth of 139 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 citizen-seismograph network of RaspberryShake, which listed it as a magnitude 4.1 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.1.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Adak (pop. 330, 55 miles away), the quake was probably not felt.
A second report was later issued by the citizen-seismograph network of RaspberryShake, which listed it as a magnitude 4.1 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.1.
According to preliminary calculations, we do not expect that the quake was felt by many people and did not cause any damage. In Adak (pop. 330, 55 miles away), the quake was probably not felt.
Earthquake data
Earthquake details
| Date & time | Aug 6, 2022 08:17:24 UTC - |
| Local time at epicenter | Friday, Aug 5, 2022 at 11:17 pm (GMT -9) |
| Status | Confirmed |
| Magnitude | 4.1 |
| Depth | 224.1 km |
| Epicenter latitude / longitude | 52.6022°N / 176.0848°W  (Bering Sea, Alaska, United States) |
| Antipode | 52.602°S / 3.915°E |
| Shaking intensity | Not felt |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Great Sitkin (59 km / 37 mi) |
| Nearby towns and cities | 89 km (55 mi) NNE of Adak (pop: 332) | Show on map | Quakes nearby 136 km (84 mi) WNW of Atka (pop: 64) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Few Clouds  8.6°C (47 F), humidity: 94%, wind: 5 m/s (10 kts) from W |
| Estimated seismic energy released | 8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 tons of TNT) | about seismic energy |
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. | Depth | Location | Source |
| 4.1 | 224 km | 89 Km NNE of Adak, Alaska | USGS |
| 4.1 | 224 km | ANDREANOF ISLANDS, ALEUTIAN IS. | EMSC |
| 4.1 | 224 km | Andreanof Islands, Aleutian Islands | RaspberryShake |
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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