Light mag. 4.0 earthquake - Alaska, USA, on Friday, Apr 29, 2022 at 9:05 pm (GMT -8) -
Light magnitude 4.0 earthquake at 42 km depth
30 Apr 05:07 UTC: First to report: USGS after 3 minutes.
30 Apr 05:08: Hypocenter depth recalculated from 34.8 to 35.0 km (from 22 to 22 mi). Epicenter location corrected by 0.9 km (0.5 mi) towards NW.
30 Apr 16:34: Magnitude recalculated from 3.8 to 4.0. Hypocenter depth recalculated from 35.0 to 41.7 km (from 22 to 26 mi). Epicenter location corrected by 0.7 km (0.4 mi) towards ESE.
30 Apr 05:08: Hypocenter depth recalculated from 34.8 to 35.0 km (from 22 to 22 mi). Epicenter location corrected by 0.9 km (0.5 mi) towards NW.
30 Apr 16:34: Magnitude recalculated from 3.8 to 4.0. Hypocenter depth recalculated from 35.0 to 41.7 km (from 22 to 26 mi). Epicenter location corrected by 0.7 km (0.4 mi) towards ESE.
Update Sat, 30 Apr 2022, 05:18
Small tremor of magnitude 3.8 just reported 44 miles south of English Bay, Alaska, United States3.8 quake 66 mi north of Kodiak, Alaska, USA, Apr 29, 2022 9:05 pm (GMT -8)
A magnitude 3.8 earthquake near English Bay, Arrondissement de Kenai Peninsula, Alaska, USA, was reported only 13 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a moderately shallow depth of 22 miles beneath the epicenter in the evening on Friday, April 29th, 2022, at 9:05 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.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 3.8 as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.8.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include English Bay (pop. 250) located 44 miles from the epicenter.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 3.8 as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.8.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include English Bay (pop. 250) located 44 miles from the epicenter.
Earthquake data
Earthquake details
| Date & time | Apr 30, 2022 05:05:01 UTC - |
| Local time at epicenter | Friday, Apr 29, 2022 at 9:05 pm (GMT -8) |
| Status | Confirmed |
| Magnitude | 4 |
| Depth | 41.7 km |
| Epicenter latitude / longitude | 58.7268°N / 152.045°W  (Gulf of Alaska, Alaska, United States) |
| Antipode | 58.727°S / 27.955°E |
| Shaking intensity | Weak shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Douglas (87 km / 54 mi) |
| Nearby towns and cities | 70 km (44 mi) S of English Bay (pop: 254) | Show on map | Quakes nearby 106 km (66 mi) SSW of Homer (pop: 5,520) | Show on map | Quakes nearby 106 km (66 mi) N of Kodiak (pop: 6,250) | Show on map | Quakes nearby 112 km (69 mi) NNE of Kodiak Station (pop: 1,300) | Show on map | Quakes nearby 117 km (73 mi) S of Anchor Point (pop: 1,930) | Show on map | Quakes nearby 120 km (75 mi) SSW of Fritz Creek (pop: 1,930) | Show on map | Quakes nearby 193 km (120 mi) SSW of Kalifornsky (pop: 7,850) | Show on map | Quakes nearby 208 km (129 mi) SSW of Kenai (pop: 7,660) | Show on map | Quakes nearby 214 km (133 mi) SSW of Sterling (pop: 5,620) | Show on map | Quakes nearby 302 km (187 mi) SSW of Alaska City (pop: 298,700) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Overcast Clouds  5.4°C (42 F), humidity: 86%, wind: 15 m/s (29 kts) from ESE |
| Estimated seismic energy released | 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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 |
| 4.0 | 42 km | 70 Km S of Nanwalek, Alaska | USGS |
| 4.1 | 41 km | KODIAK ISLAND REGION, ALASKA | EMSC |
| 4.0 | 42 km | Kodiak Island Region, Alaska | RaspberryShake |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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