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Very strong mag. 6.9 earthquake - Popof Island, 11 mi south of Sand Point, Aleutians East, Alaska, USA, on Thursday, May 13, 1993 at 11:59 GMT

Very strong mag. 6.9 earthquake - Popof Island, 11 mi south of Sand Point, Aleutians East, Alaska, USA, on Thursday, May 13, 1993 at 11:59 GMT Very strong mag. 6.9 earthquake - Popof Island, 11 mi south of Sand Point, Aleutians East, Alaska, USA, on Thursday, May 13, 1993 at 11:59 GMT

Very strong magnitude 6.9 earthquake at 32 km depth

Earthquake details

Date & timeMay 13, 1993 11:59:49 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.9
Depth32.3 km
Epicenter latitude / longitude55.177°N / 160.458°W (Gulf of Alaska, Alaska, United States)
Antipode55.177°S / 19.542°E
Shaking intensityStrong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoDana (70 km / 43 mi)
Nearby towns and cities18 km (11 mi) S of Sand Point (pop: 1,060) | Show on map | Quakes nearby
103 km (64 mi) SSE of Nelson Lagoon (pop: 52) | Show on map | Quakes nearby
116 km (72 mi) SW of Perryville (pop: 113) | Show on map | Quakes nearby
119 km (74 mi) E of King Cove (pop: 1,010) | Show on map | Quakes nearby
144 km (89 mi) E of Cold Bay (pop: 123) | Show on map | Quakes nearby
160 km (100 mi) SW of Chignik Lake (pop: 73) | Show on map | Quakes nearby
174 km (108 mi) SW of Chignik Lagoon (pop: 78) | Show on map | Quakes nearby
361 km (224 mi) ENE of Akutan (pop: 1,040) | Show on map | Quakes nearby
418 km (260 mi) ENE of Dutch Harbor (pop: 4,380) | Show on map | Quakes nearby
418 km (260 mi) ENE of Unalaska (pop: 4,490) | Show on map | Quakes nearby
Estimated seismic energy released1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 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
6.932 kmAlaska Peninsula (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

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.

Aftershocks

[More info]

Recorded aftershocks, latest first (19 quakes)

Date and timeMag
Depth
LocationDetails
Nov 5, 1993 07:49
29 years ago
4.0

62 km
Big Koniuji Island, 34 mi E of Sand Point, Aleutians East, Alaska, USAMore
Nov 4, 1993 20:09
29 years ago
4.5

33 km
14 mi SE of Sanak Island, Aleutians East, Alaska, USAMore
Sep 12, 1993 22:50
29 years ago
4.6

1.7 km
36 mi SE of Cherni Island, Aleutians East, Alaska, USAMore
Aug 20, 1993 21:22
29 years ago
4.7

33 km
41 mi SE of Sand Point, Aleutians East, Alaska, USAMore
Jul 19, 1993 09:58
29 years ago
3.4

50 km
Aleutians East Parish, 14 mi W of Wosnesenski Island, Aleutians East, Alaska, USAMore
Jul 17, 1993 19:11
29 years ago
4.4

33 km
53 mi SE of Sand Point, Aleutians East, Alaska, USAMore
Jul 14, 1993 05:24
29 years ago
4.0

33 km
54 mi SE of Sand Point, Aleutians East, Alaska, USAMore
Jul 8, 1993 18:26
29 years ago
4.6

33 km
54 mi S of Sand Point, Aleutians East, Alaska, USAMore
Jun 22, 1993 04:12
29 years ago
4.1

23 km
Shumagin Islands, 26 mi SE of Sand Point, Aleutians East, Alaska, USAMore
Jun 10, 1993 12:03
29 years ago
4.3

33 km
52 mi SE of Cherni Island, Aleutians East, Alaska, USAMore
Jun 8, 1993 21:58
29 years ago
4.0

33 km
80 mi S of Sand Point, Aleutians East, Alaska, USAMore
Jun 5, 1993 19:02
30 years ago
4.5

33 km
60 mi SE of Sand Point, Aleutians East, Alaska, USAMore
May 30, 1993 21:08
30 years ago
3.9

33 km
71 mi S of Sand Point, Aleutians East, Alaska, USAMore
May 29, 1993 07:28
30 years ago
4.4

33 km
66 mi S of Sand Point, Aleutians East, Alaska, USAMore
May 25, 1993 23:16
30 years ago
6.2

37 km
22 mi S of Sand Point, Aleutians East, Alaska, USAMore
May 22, 1993 13:35
30 years ago
4.3

33 km
44 mi SE of Sand Point, Aleutians East, Alaska, USAMore
May 17, 1993 06:06
30 years ago
5.7

33 km
15 mi SE of Shumagin s Island, Aleutians East, Alaska, USAMore
May 15, 1993 23:42
30 years ago
4.0

33 km
112 mi S of Sand Point, Aleutians East, Alaska, USAMore
May 13, 1993 23:41
30 years ago
5.1

33 km
Shumagin Islands, 26 mi SE of Sand Point, Aleutians East, Alaska, USAMore

Earlier earthquakes in the same area

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