Moderate mag. 5.3 earthquake - Gulf of Alaska, 62 mi west of Kodiak Island, Alaska, USA, on Saturday, 13 Feb 2021 4:08 am (GMT -9) -

Moderate mag. 5.3 earthquake - Gulf of Alaska, 62 mi west of Kodiak Island, Alaska, USA, on Saturday, 13 Feb 2021 4:08 am (GMT -9)

Moderate magnitude 5.3 earthquake at 39 km depth

13 Feb 13:13 UTC: First to report: EMSC after 5 minutes.
13 Feb 13:13: Now using data updates from USGS
... [show all] ...
13 Feb 13:25: Hypocenter depth recalculated from 48.1 to 39.3 km (from 30 to 24 mi). Epicenter location corrected by 4.1 km (2.6 mi) towards SSW.
Update Sat, 13 Feb 2021, 13:18
Significant 5.4 quake hits near Akhiok, Kodiak Island County, Alaska, USA
5.4 quake 13 Feb 4:08 am (GMT -9)
5.4 quake 13 Feb 4:08 am (GMT -9)
A magnitude 5.4 earthquake near Akhiok, Kodiak Island County, Alaska, USA, was reported only 9 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 39 miles beneath the epicenter early morning on Saturday 13 February 2021 at 4:08 am 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 German Research Centre for Geosciences (GFZ), which listed it as a magnitude 5.6 earthquake. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.4.
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 Akhiok (pop. 72) located 34 miles from the epicenter.
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: 13 Feb 2021 13:08:55 UTC -
Local time at epicenter: Saturday, 13 Feb 2021 4:08 am (GMT -9)
Magnitude: 5.3
Depth: 39.3 km
Epicenter latitude / longitude: 57.1226°N / 155.0514°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (86 km / 53 mi)
Nearby towns and cities:
57 km (35 mi) WNW of Akhiok (pop: 72) --> See nearby quakes!
61 km (38 mi) SW of Karluk (pop: 37) --> See nearby quakes!
79 km (49 mi) SW of Larsen Bay (pop: 88) --> See nearby quakes!
163 km (101 mi) WSW of Kodiak Station (pop: 1,300) --> See nearby quakes!
175 km (109 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
347 km (215 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
426 km (265 mi) SSW of Kalifornsky (pop: 7,850) --> See nearby quakes!
439 km (273 mi) SSW of Soldotna (pop: 4,540) --> See nearby quakes!
440 km (273 mi) SSW of Kenai (pop: 7,660) --> See nearby quakes!
453 km (281 mi) SW of Sterling (pop: 5,620) --> See nearby quakes!
99 km (62 mi) WSW of Kodiak Island (pop: 13,600) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 2.5°C (36 F), humidity: 80%, wind: 12 m/s (24 kts) from E
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5.6 x 1012 joules (1.56 gigawatt hours, equivalent to 1344 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
5.339 kmAlaska Peninsula, USAUSGS
5.357 kmALASKA PENINSULA, USAEMSC
5.251 kmAlaska Peninsula, USAGFZ
5.348 kmAlaska Peninsula, USAGeoAu
5.5109 kmAlaska Peninsula, 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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Aftershocks

More info
Recorded aftershocks, latest first (22 quakes):
  • 14 Apr 2021 07:28 UTC
    | M 2.9 |
    8.4 km (5.2 mi) depth
    |
    23 km (14 mi) distance
    | USGS | Details
  • 12 Apr 2021 11:38 UTC
    | M 3.5 |
    13.8 km (8.6 mi) depth
    |
    25 km (15 mi) distance
    | USGS | Details
  • 09 Apr 2021 01:33 UTC
    | M 2.1 |
    56.6 km (35.2 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 01 Apr 2021 19:24 UTC
    | M 2.5 |
    28 km (17.4 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 16 Mar 2021 14:56 UTC
    | M 2.0 |
    78.2 km (48.6 mi) depth
    |
    14 km (9 mi) distance
    | USGS | Details
  • 16 Mar 2021 07:45 UTC
    | M 2.0 |
    29.4 km (18.3 mi) depth
    |
    6 km (4 mi) distance
    | USGS | Details
  • 28 Feb 2021 04:30 UTC
    | M 2.5 |
    35 km (21.7 mi) depth
    |
    11 km (7 mi) distance
    | EMSC | Details
  • 28 Feb 2021 04:30 UTC
    | M 2.5 |
    37.2 km (23.1 mi) depth
    |
    8 km (5 mi) distance
    | USGS | Details
  • 24 Feb 2021 12:17 UTC
    | M 2.0 |
    35 km (21.7 mi) depth
    |
    1 km (1 mi) distance
    | USGS | Details
  • 23 Feb 2021 09:35 UTC
    | M 2.0 |
    32.1 km (19.9 mi) depth
    |
    4 km (2 mi) distance
    | USGS | Details
  • 22 Feb 2021 20:30 UTC
    | M 2.8 |
    55.6 km (34.5 mi) depth
    |
    18 km (11 mi) distance
    | USGS | Details
  • 15 Feb 2021 15:29 UTC
    | M 2.1 |
    54.5 km (33.9 mi) depth
    |
    3 km (2 mi) distance
    | USGS | Details
  • 14 Feb 2021 16:00 UTC
    | M 2.5 |
    29.2 km (18.1 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • 14 Feb 2021 14:11 UTC
    | M 2.7 |
    48.1 km (29.9 mi) depth
    |
    1 km (0 mi) distance
    | USGS | Details
  • 14 Feb 2021 08:27 UTC
    | M 2.5 |
    23.2 km (14.4 mi) depth
    |
    10 km (6 mi) distance
    | USGS | Details
  • 13 Feb 2021 16:21 UTC
    | M 2.3 |
    35 km (21.7 mi) depth
    |
    5 km (3 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area since 1900


Map of earlier quakes

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