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Strong mag. 6.3 earthquake - Bering Sea, Alaska, USA, on Wednesday, Dec 14, 2022 at 8:40 am (GMT -10) -

Strong magnitude 6.3 earthquake at 84 km depth

14 Dec 18:49 UTC: First to report: IRIS after 9 minutes.
14 Dec 18:51: Now using data updates from USGS
14 Dec 19:02: Magnitude recalculated from 6.2 to 6.3. Hypocenter depth recalculated from 81.8 to 83.7 km (from 51 to 52 mi). Epicenter location corrected by 6.9 km (4.3 mi) towards N.

Earthquake details

Date & time	Dec 14, 2022 18:40:28 UTC -
Local time at epicenter	Wednesday, Dec 14, 2022 at 8:40 am (GMT -10)
Status	Confirmed
Magnitude	6.3
Depth	83.7 km
Epicenter latitude / longitude	51.7248°N / 178.6537°E (Bering Sea, Alaska, United States)
Antipode	51.725°S / 1.346°W
Shaking intensity	Very strong shaking
Felt	1 report
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Little Sitkin (26 km / 16 mi)
Nearby towns and cities	392 km (244 mi) ESE of Attu Station (pop: 21) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 2.3°C (36 F), humidity: 54%, wind: 5 m/s (10 kts) from NNE
Estimated seismic energy released	1.8 x 10¹⁴ joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) \| about seismic energy

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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.

Mag.	Depth	Location	Source
6.3	84 km	Rat Islands, Aleutian Islands, Alaska	USGS
6.0	89 km	Near Anchorage	RENASS
6.2	73 km	Rat Islands, Aleutian Islands	GFZ
6.3	80 km	RAT ISLANDS, ALEUTIAN ISLANDS	EMSC
6.3	10 km	Rat Islands, Aleutian Islands	IRIS
6.3	84 km	Rat Islands, Aleutian Islands	RaspberryShake
6.2	77 km	Rat Islands, Aleutian Islands, United States [Sea: United States]	INGV
6.2	83 km	Rat Islands, Aleutian Islands	GeoAu

Most recent quakes Top 20 past 24 hrs Quakes in the US Alaska

Seismograms

Seismic station: Tucson, Arizona (TUC/IU network) | Distance from quake: 5957 km / 3701 mi | Show on map | Station Info

Seismic station Tucson, Arizona: 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: 0.02-2.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

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Amchitka (17.3 km SE of epicenter) [Map] / Very strong shaking (MMI VII) / complex rolling (tilting in multiple directions) / 20-30 s

germany / not felt

Aftershocks

[More info]

Recorded aftershocks, latest first (14 quakes)

Date and time	Mag Depth	Location	Details
Mar 11, 2023 02:09 3 weeks ago	3.0 95 km	Bering Sea, Alaska, USA	More
Mar 10, 2023 11:46 3 weeks ago	3.7 26 km	Bering Sea, Alaska, USA	More
Mar 9, 2023 01:11 3 weeks ago	3.4 45 km	Bering Sea, Alaska, USA	More
Mar 4, 2023 04:10 4 weeks ago	4.0 75 km	Bering Sea, Alaska, USA	More
Feb 24, 2023 08:42 5 weeks ago	4.2 115 km	Bering Sea, Alaska, USA	More
Feb 23, 2023 21:01 5 weeks ago	3.3 43 km	Bering Sea, Alaska, USA	More
Feb 20, 2023 18:42 6 weeks ago	4.1 155 km	Bering Sea, Alaska, USA	More
Feb 11, 2023 05:09 7 weeks ago	4.4 61 km	Bering Sea, Alaska, USA	More
Jan 17, 2023 13:13 10 weeks ago	4.2 28 km	Bering Sea, Alaska, USA	More
Dec 24, 2022 17:45 14 weeks ago	4.0 111 km	Bering Sea, Alaska, USA	More
Dec 24, 2022 10:43 14 weeks ago	3.0 70 km	Rat Islands, Aleutian Islands, Alaska	More
Dec 23, 2022 18:49 14 weeks ago	3.3 70 km	Bering Sea, Alaska, USA	More
Dec 16, 2022 09:21 15 weeks ago	3.0 50 km	Bering Sea, Alaska, USA	More
Dec 14, 2022 18:46 15 weeks ago	3.5 71 km	Rat Islands, Aleutian Islands, Alaska	More

Earlier earthquakes in the same area

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