Moderate mag. 4.8 earthquake - Gulf of Alaska, 20 mi southeast of Hinchinbrook Island, Valdez-Cordova, Alaska, USA, on Monday, 25 Jan 2021 1:02 pm (GMT -9) -

Moderate mag. 4.8 earthquake - Gulf of Alaska, 20 mi southeast of Hinchinbrook Island, Valdez-Cordova, Alaska, USA, on Monday, 25 Jan 2021 1:02 pm (GMT -9)

Moderate magnitude 4.8 earthquake at 17 km depth

25 Jan 22:07 UTC: First to report: USGS after 6 minutes.
25 Jan 22:09: Magnitude recalculated from 2.2 to 5.0. Hypocenter depth recalculated from 15.2 to 14.9 km (from 9.4 to 9.3 mi).
... [show all] ...
28 Jan 22:02: Magnitude recalculated from 4.9 to 4.8. Hypocenter depth recalculated from 10.5 to 16.5 km (from 6.5 to 10.3 mi). Epicenter location corrected by 4.5 km (2.8 mi) towards SSE.
Update Mon, 25 Jan 2021, 22:12
Significant earthquake of magnitude 5.0 just reported 50 miles southeast of Tatitlek, Alaska, United States
5.0 quake 25 Jan 1:02 pm (GMT -9)
5.0 quake 25 Jan 1:02 pm (GMT -9)
A shallow magnitude 5.0 earthquake was reported around noon near Tatitlek, Valdez-Cordova County, Alaska, USA.
According to the United States Geological Survey (USGS), the quake hit on Monday 25 January 2021 at 1:02 pm local time at a shallow depth of 9.3 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 German Research Centre for Geosciences (GFZ) which listed the quake at magnitude 4.8. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.0.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Tatitlek (pop. 88) located 50 miles from the epicenter, and Valdez (pop. 3,900) 64 miles away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data:

Date & time: 25 Jan 2021 22:02:00 UTC -
Local time at epicenter: Monday, 25 Jan 2021 1:02 pm (GMT -9)
Magnitude: 4.8
Depth: 16.5 km
Epicenter latitude / longitude: 60.2371°N / 145.9395°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Wrangell (225 km / 140 mi)
Nearby towns and cities:
35 km (22 mi) SSW of Cordova (pop: 2,200) --> See nearby quakes!
102 km (63 mi) SSE of Valdez (pop: 3,870) --> See nearby quakes!
194 km (121 mi) E of Seward (pop: 2,790) --> See nearby quakes!
229 km (142 mi) SE of Palmer (pop: 6,790) --> See nearby quakes!
231 km (144 mi) ESE of Eagle River (pop: 24,800) --> See nearby quakes!
231 km (144 mi) ESE of Eagle River (Anchorage) (pop: 24,800) --> See nearby quakes!
241 km (150 mi) SE of Wasilla (pop: 9,280) --> See nearby quakes!
241 km (150 mi) ESE of Anchorage (pop: 298,700) --> See nearby quakes!
244 km (151 mi) ESE of Knik-Fairview (pop: 14,900) --> See nearby quakes!
244 km (152 mi) SE of Fishhook (pop: 4,680) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 1°C (34 F), humidity: 80%, wind: 2 m/s (3 kts) from W
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1 x 1012 joules (278 megawatt hours, equivalent to 239 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.
MagnitudeDepthLocationSource
4.817 km35 Km SSW of Cordova, Alaska, USAUSGS
4.912 kmSOUTHERN ALASKA, USAEMSC
4.810 kmSouthern Alaska, USAGFZ
5.016 kmSouthern Alaska, USAGeoAu
4.9170 kmSouthern Alaska, USABMKG

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 yet. If you felt it be the first to report it!
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Earlier earthquakes in the same area since 1900


Map of earlier quakes

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