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Strong mag. 6.2 earthquake - Bering Sea, Alaska, USA, on Friday, Jan 21, 2022 at 8:17 pm (GMT -9) -

Strong mag. 6.2 earthquake - Bering Sea, Alaska, USA, on Friday, Jan 21, 2022 at 8:17 pm (GMT -9) Strong mag. 6.2 earthquake - Bering Sea, Alaska, USA, on Friday, Jan 21, 2022 at 8:17 pm (GMT -9)

Strong magnitude 6.2 earthquake at 43 km depth

22 Jan 05:20 UTC: First to report: VolcanoDiscovery after 4 minutes.
22 Jan 05:23: Now using data updates from USGS
22 Jan 05:34: Magnitude recalculated from 6.3 to 6.2. Hypocenter depth recalculated from 3.0 to 42.8 km (from 1.9 to 27 mi). Epicenter location corrected by 28 km (17 mi) towards NNW.

Earthquake details

Date & timeJan 22, 2022 05:17:06 UTC -
Local time at epicenterFriday, Jan 21, 2022 at 8:17 pm (GMT -9)
StatusConfirmed
Magnitude6.2
Depth42.8 km
Epicenter latitude / longitude53.3159°N / 166.7506°W (Bering Sea, Alaska, United States)
Antipode53.316°S / 13.249°E
Shaking intensityLight shaking
Felt7 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoMakushin (65 km / 40 mi)
Nearby towns and cities64 km (40 mi) SSW of Unalaska (pop: 4,490) | Show on map | Quakes nearby
65 km (41 mi) SSW of Dutch Harbor (pop: 4,380) | Show on map | Quakes nearby
111 km (69 mi) SW of Akutan (pop: 1,040) | Show on map | Quakes nearby
147 km (91 mi) ENE of Nikolski (pop: 18) | Show on map | Quakes nearby
277 km (172 mi) SW of False Pass (pop: 40) | Show on map | Quakes nearby
334 km (208 mi) SW of Cold Bay (pop: 123) | Show on map | Quakes nearby
348 km (216 mi) WSW of King Cove (pop: 1,010) | Show on map | Quakes nearby
407 km (253 mi) SSE of Saint George (pop: 102) | Show on map | Quakes nearby
465 km (289 mi) SW of Nelson Lagoon (pop: 52) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Snow -1.3°C (30 F), humidity: 79%, wind: 9 m/s (18 kts) from NNW
Estimated seismic energy released1.3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 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.DepthLocationSource
6.243 km87 Km S of Unalaska, AlaskaUSGS
6.243 kmFox Islands, Aleutian IslandsRaspberryShake
6.349 kmFox Islands, Aleutian IslandsGFZ
6.260 kmFOX ISLANDS, ALEUTIAN ISLANDSEMSC
6.110 kmNear AnchorageRENASS
6.320 kmFox Islands, Aleutian Islands, United States [Sea: United States]INGV
6.344 kmFox Islands, Aleutian IslandsGeoAu

Seismograms

Seismic station: Tucson, Arizona (TUC/IU network) | Distance from quake: 4967 km / 3086 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
Show more

User reports for this quake (8)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Akutan / Light shaking (MMI IV) / rattling, vibrating / 30-60 s : The lights did not swing and pictures did not move but it was shaking in earnest. | 13 users found this interesting. (reported through our app)  
191 chernofski drive (65.3 km NNE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s : Shaking side to side | 9 users found this interesting.  
Unalaska Valley / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s : Vibrating and shaking. Mostly calm. Lasted a while | 7 users found this interesting.  
Unalaska / Moderate shaking (MMI V) / 2-5 s : bed was shaking | 7 users found this interesting. (reported through our app)  
Homer, Diamond Ridge / Very weak shaking (MMI II) / vibration and rolling / 1-2 minutes : Very low level shaking. Others in the house did not feel it | 6 users found this interesting. (reported through our app)  
Dutch Harbor, Aleutians West, Alaska (63.9 km N of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 15-20 s (reported through our app)
Nikiski, AK / not felt (reported through our app)
Westward / Light shaking (MMI IV) / both vertical and horizontal swinging / 10-15 s

Aftershocks

[More info]

Recorded aftershocks, latest first (45 quakes)

Date and timeMag
Depth
LocationDetails
Jun 23, 2022 14:01
39 weeks ago
4.3

48 km
Bering Sea, 65 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jun 20, 2022 19:45
39 weeks ago
2.2

25 km
Fox Islands, Aleutian IslandsMore
Jun 17, 2022 21:16
39 weeks ago
3.1

35 km
North Pacific Ocean, 44 mi SE of Unalaska, Aleutians West, Alaska, USAMore
Jun 17, 2022 21:14
39 weeks ago
2.7

28 km
North Pacific Ocean, 44 mi SE of Unalaska, Aleutians West, Alaska, USAMore
Jun 17, 2022 04:09
40 weeks ago
2.3

9.8 km
16 Km ESE of Unalaska, AlaskaMore
Jun 10, 2022 16:55
41 weeks ago
2.1

20 km
61 Km SSE of Unalaska, AlaskaMore
Jun 10, 2022 06:39
41 weeks ago
2.8

28 km
North Pacific Ocean, 51 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jun 9, 2022 13:02
41 weeks ago
2.7

10 km
North Pacific Ocean, Alaska, USAMore
Jun 8, 2022 20:56
41 weeks ago
5.2

8.5 km
4.7 mi W of Unalaska, Aleutians West, Alaska, USAMore
Jun 8, 2022 12:37
41 weeks ago
2.7

19 km
North Pacific Ocean, 56 mi SE of Unalaska, Aleutians West, Alaska, USAMore
May 30, 2022 14:32
42 weeks ago
2.6

25 km
79 Km S of Unalaska, AlaskaMore
May 26, 2022 02:10
43 weeks ago
3.7

35 km
North Pacific Ocean, 53 mi S of Unalaska, Aleutians West, Alaska, USAMore
May 19, 2022 20:40
44 weeks ago
2.3

9.8 km
7 Km WSW of Unalaska, AlaskaMore
May 17, 2022 15:49
44 weeks ago
2.1

24 km
93 Km E of Nikolski, AlaskaMore
May 17, 2022 09:12
44 weeks ago
3.5

35 km
Bering Sea, 58 mi SW of Unalaska, Aleutians West, Alaska, USAMore
May 16, 2022 22:36
44 weeks ago
2.7

56 km
Bering Sea, 64 mi SW of Unalaska, Aleutians West, Alaska, USAMore
May 16, 2022 22:36
44 weeks ago
2.2

69 km
89 Km ENE of Nikolski, AlaskaMore
May 15, 2022 15:44
44 weeks ago
3.6

72 km
Bering Sea, 24 mi SE of Unalaska, Aleutians West, Alaska, USAMore
Apr 30, 2022 05:37
46 weeks ago
3.5

74 km
Bering Sea, 17 mi SE of Unalaska, Aleutians West, Alaska, USAMore
Apr 23, 2022 07:21
47 weeks ago
4.5

41 km
North Pacific Ocean, 64 mi S of Unalaska, Aleutians West, Alaska, USAMore
Apr 18, 2022 05:21
48 weeks ago
2.5

25 km
80 Km SSW of Unalaska, AlaskaMore
Apr 12, 2022 15:46
49 weeks ago
2.4

42 km
59 Km SE of Unalaska, AlaskaMore
Apr 2, 2022 00:45
50 weeks ago
2.1

42 km
73 Km SSW of Unalaska, AlaskaMore
Mar 14, 2022 03:38
1 year 1 weeks ago
4.1

49 km
Bering Sea, 40 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 28, 2022 14:28
1 year 3 weeks ago
4.5

35 km
North Pacific Ocean, 67 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 27, 2022 05:49
1 year 3 weeks ago
3.3

35 km
North Pacific Ocean, 51 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 22, 2022 04:10
1 year 4 weeks ago
5.1

49 km
Bering Sea, 39 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 21, 2022 08:50
1 year 4 weeks ago
2.2

48 km
72 Km S of Unalaska, AlaskaMore
Feb 21, 2022 04:30
1 year 4 weeks ago
2.0

26 km
Fox Islands, Aleutian IslandsMore
Feb 21, 2022 02:33
1 year 4 weeks ago
5.1

24 km
Bering Sea, 51 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 18, 2022 20:43
1 year 4 weeks ago
2.1

33 km
54 Km SE of Unalaska, AlaskaMore
Feb 10, 2022 11:53
1 year 6 weeks ago
4.3

5.1 km
North Pacific Ocean, 56 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 4, 2022 16:23
1 year 6 weeks ago
3.7

10 km
North Pacific Ocean, 52 mi S of Unalaska, Aleutians West, Alaska, USAMore
Feb 2, 2022 23:54
1 year 7 weeks ago
4.7

48 km
Bering Sea, 39 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jan 31, 2022 11:39
1 year 7 weeks ago
4.2

42 km
North Pacific Ocean, 69 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jan 30, 2022 19:58
1 year 7 weeks ago
4.5

56 km
Bering Sea, 45 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jan 28, 2022 23:01
1 year 7 weeks ago
2.1

74 km
28 Km S of Unalaska, AlaskaMore
Jan 28, 2022 23:01
1 year 7 weeks ago
2.6

73 km
39 Km S of Unalaska, AlaskaMore
Jan 24, 2022 20:59
1 year 8 weeks ago
3.7

26 km
Bering Sea, Alaska, USAMore
Jan 24, 2022 06:09
1 year 8 weeks ago
5.0

44 km
Bering Sea, Alaska, USAMore
Jan 24, 2022 00:02
1 year 8 weeks ago
3.0

26 km
Bering Sea, Alaska, USAMore
Jan 23, 2022 19:10
1 year 8 weeks ago
4.6

10 km
North Pacific Ocean, Alaska, USAMore
Jan 22, 2022 07:45
1 year 8 weeks ago
2.2

26 km
79 Km SSW of Unalaska, AlaskaMore
Jan 22, 2022 05:38
1 year 8 weeks ago
3.9

26 km
Bering Sea, Alaska, USAMore
Jan 22, 2022 05:19
1 year 8 weeks ago
4.6

43 km
Bering Sea, Alaska, USAMore

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