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Major magnitude 7.1 earthquake - Valdez-Cordova Parish, Alaska, USA, on Wednesday, February 28, 1979 at 21:27 GMT

Major magnitude 7.1 earthquake - Valdez-Cordova Parish, Alaska, USA, on Wednesday, February 28, 1979 at 21:27 GMT

Major magnitude 7.1 earthquake at 15 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Feb 28, 1979 21:27:06 UTC
Magnitude: 7.1
Depth: 15.0 km
Epicenter latitude / longitude: 60.642°N / 141.593°W (Valdez-Cordova, Alaska, United States)
Antipode: 60.642°S / 38.407°E
Nearest volcano: Churchill (83 km / 52 mi)
Nearby towns and cities:
113 km (70 mi) SE of MakKarti (pop: 28) --> See nearby quakes!
228 km (142 mi) E of Cordova (pop: 2,200) --> See nearby quakes!
263 km (163 mi) E of Valdez (pop: 3,870) --> See nearby quakes!
308 km (192 mi) SSE of Tok (pop: 1,260) --> See nearby quakes!
356 km (221 mi) W of Whitehorse (Yukon, Canada) (pop: 23,300) --> See nearby quakes!
376 km (234 mi) WNW of Haines (pop: 1,710) --> See nearby quakes!
404 km (251 mi) ESE of Sutton-Alpine (pop: 1,450) --> See nearby quakes!
405 km (252 mi) SSE of Deltana (pop: 2,250) --> See nearby quakes!
481 km (299 mi) NW of Juneau (pop: 32,800) --> See nearby quakes!
537 km (334 mi) NW of Sitka (pop: 8,860) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 1015 joules (783 gigawatt hours, equivalent to 6.7 x 105 tons of TNT or 42.1 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
7.115 kmSouthern Alaska (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.
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Aftershocks

[More info]

Recorded aftershocks, latest first (199 quakes)

Date and timeMag
Depth
LocationDetails
Feb 7, 1981 03:59
41 years ago
3.7

33 km
Valdez-Cordova Parish, Alaska, USAMore
Oct 30, 1980 17:11
42 years ago
4.3

15 km
Alaska, USAMore
Oct 13, 1980 07:38
42 years ago
3.5

15 km
USAMore
Oct 6, 1980 23:33
42 years ago
3.9

15 km
Alaska, USAMore
Sep 13, 1980 21:19
42 years ago
3.3

33 km
22 mi E of Kayak Island, Valdez-Cordova, Alaska, USAMore
Sep 4, 1980 10:53
42 years ago
5.4

33 km
Alaska, USAMore
Aug 10, 1980 16:18
42 years ago
3.0

33 km
Alaska, USAMore
Jul 28, 1980 02:29
42 years ago
3.1

28 km
USAMore
Jul 28, 1980 01:15
42 years ago
3.0

15 km
Alaska, USAMore
Jul 25, 1980 03:35
42 years ago
3.7

15 km
Alaska, USAMore
Jul 18, 1980 20:12
42 years ago
4.7

15 km
Alaska, USAMore
Jul 2, 1980 02:42
42 years ago
3.8

15 km
Alaska, USAMore
Jun 30, 1980 18:59
42 years ago
4.9

15 km
Alaska, USAMore
Jun 30, 1980 18:47
42 years ago
4.5

15 km
Alaska, USAMore
Jun 30, 1980 18:07
42 years ago
5.0

13 km
Alaska, USAMore
Apr 24, 1980 14:52
42 years ago
3.2

75 km
Yakutat Parish, Alaska, USAMore
Mar 5, 1980 19:59
42 years ago
3.4

15 km
56 mi NW of Yakutat, Alaska, USAMore
Feb 2, 1980 04:29
42 years ago
3.5

15 km
Alaska, USAMore
Jan 12, 1980 21:50
42 years ago
4.0

15 km
Alaska, USAMore
Dec 21, 1979 02:40
42 years ago
3.4

33 km
Alaska, USAMore
Dec 9, 1979 07:03
42 years ago
4.9

15 km
CanadaMore
Nov 22, 1979 18:51
43 years ago
3.5

33 km
Alaska, USAMore
Nov 22, 1979 12:26
43 years ago
3.4

33 km
Yakutat Parish, 69 mi E of Wingham Island, Valdez-Cordova, Alaska, USAMore
Nov 12, 1979 15:13
43 years ago
3.7

15 km
Alaska, USAMore
Nov 11, 1979 07:53
43 years ago
3.7

15 km
Alaska, USAMore
Nov 10, 1979 20:20
43 years ago
3.8

15 km
CanadaMore
Nov 10, 1979 11:15
43 years ago
4.7

15 km
Alaska, USAMore
Nov 4, 1979 05:03
43 years ago
4.2

33 km
Valdez-Cordova Parish, Alaska, USAMore
Oct 17, 1979 23:34
43 years ago
4.5

15 km
Alaska, USAMore
Oct 16, 1979 12:14
43 years ago
3.4

15 km
Alaska, USAMore
Sep 1, 1979 18:56
43 years ago
3.4

15 km
58 mi NW of Yakutat, Alaska, USAMore
Aug 25, 1979 08:22
43 years ago
3.6

15 km
Alaska, USAMore
Aug 11, 1979 20:08
43 years ago
3.6

15 km
Alaska, USAMore
Jul 21, 1979 10:29
43 years ago
3.3

15 km
USAMore
Jul 4, 1979 00:15
43 years ago
3.1

15 km
USAMore
Jul 2, 1979 18:20
43 years ago
3.7

15 km
Alaska, USAMore
Jun 29, 1979 09:12
43 years ago
3.5

15 km
Valdez-Cordova Parish, Alaska, USAMore
Jun 25, 1979 05:07
43 years ago
4.6

19 km
USAMore
Jun 23, 1979 12:11
43 years ago
3.5

15 km
Alaska, USAMore
Jun 18, 1979 04:52
43 years ago
3.0

15 km
Valdez-Cordova Parish, 52 mi NE of Wingham Island, Valdez-Cordova, Alaska, USAMore
Jun 17, 1979 18:21
43 years ago
3.5

15 km
USAMore
Jun 17, 1979 17:58
43 years ago
4.4

15 km
USAMore
Jun 15, 1979 16:51
43 years ago
3.0

15 km
Alaska, USAMore
Jun 15, 1979 01:12
43 years ago
3.8

15 km
USAMore
Jun 10, 1979 11:29
43 years ago
4.0

15 km
Canada, 87 km NW of Knight Island, Yakutat, Alaska, USAMore
Jun 3, 1979 15:02
43 years ago
4.2

15 km
USAMore
May 19, 1979 18:21
43 years ago
3.6

15 km
Alaska, USAMore
May 19, 1979 18:05
43 years ago
4.2

15 km
Alaska, USAMore
May 16, 1979 14:19
43 years ago
4.6

15 km
Alaska, USAMore
May 14, 1979 09:19
43 years ago
3.5

15 km
USAMore
May 10, 1979 21:57
43 years ago
4.4

15 km
Alaska, USAMore
May 5, 1979 16:54
43 years ago
3.4

15 km
Alaska, USAMore
May 4, 1979 19:16
43 years ago
3.1

15 km
USAMore
May 2, 1979 13:40
43 years ago
3.5

15 km
CanadaMore
Apr 29, 1979 07:08
43 years ago
3.6

15 km
Alaska, USAMore
Apr 22, 1979 16:11
43 years ago
3.0

15 km
USAMore
Apr 22, 1979 14:04
43 years ago
4.2

15 km
Alaska, USAMore
Apr 21, 1979 12:36
43 years ago
4.0

15 km
CanadaMore
Apr 20, 1979 23:06
43 years ago
3.6

15 km
CanadaMore
Apr 20, 1979 21:58
43 years ago
4.4

15 km
CanadaMore
Apr 20, 1979 12:49
43 years ago
5.3

15 km
CanadaMore
Apr 19, 1979 23:03
43 years ago
3.0

15 km
CanadaMore
Apr 19, 1979 05:07
43 years ago
3.2

15 km
Alaska, USAMore
Apr 17, 1979 00:09
43 years ago
3.5

15 km
Alaska, USAMore
Apr 16, 1979 13:08
43 years ago
3.2

15 km
Alaska, USAMore
Apr 15, 1979 04:49
43 years ago
3.9

15 km
Canada, 101 km NW of Knight Island, Yakutat, Alaska, USAMore
Apr 11, 1979 12:46
43 years ago
2.9

15 km
Alaska, USAMore
Apr 11, 1979 11:15
43 years ago
3.3

15 km
Yakutat Parish, 29 mi NW of Yakutat, Alaska, USAMore
Apr 11, 1979 01:42
43 years ago
3.9

15 km
USAMore
Apr 5, 1979 23:07
43 years ago
4.0

18 km
Yakutat Parish, Alaska, USAMore
Apr 5, 1979 17:49
43 years ago
3.5

15 km
Alaska, USAMore
Apr 3, 1979 16:13
43 years ago
3.9

15 km
Alaska, USAMore
Apr 3, 1979 11:35
43 years ago
3.1

15 km
44 mi W of Yakutat, Alaska, USAMore
Apr 1, 1979 14:16
43 years ago
3.2

15 km
Yakutat Parish, 37 mi NW of Yakutat, Alaska, USAMore
Mar 30, 1979 12:56
43 years ago
3.0

13 km
Yakutat Parish, 43 mi NW of Yakutat, Alaska, USAMore
Mar 30, 1979 08:28
43 years ago
3.4

8 km
USAMore
Mar 29, 1979 20:52
43 years ago
3.0

10 km
USAMore
Mar 29, 1979 03:20
43 years ago
3.7

10 km
Alaska, USAMore
Mar 28, 1979 18:50
43 years ago
3.0

6 km
Alaska, USAMore
Mar 28, 1979 01:32
43 years ago
3.7

12 km
USAMore
Mar 27, 1979 18:16
43 years ago
3.2

5 km
Canada, 101 km NW of Knight Island, Yakutat, Alaska, USAMore
Mar 26, 1979 23:25
43 years ago
3.4

11 km
CanadaMore
Mar 26, 1979 02:45
43 years ago
3.8

10 km
USAMore
Mar 25, 1979 13:15
43 years ago
2.9

0 km
Alaska, USAMore
Mar 25, 1979 09:03
43 years ago
3.0

6 km
Alaska, USAMore
Mar 25, 1979 03:55
43 years ago
3.1

12 km
Valdez-Cordova Parish, Alaska, USAMore
Mar 23, 1979 01:59
43 years ago
2.9

14 km
Valdez-Cordova Parish, Alaska, USAMore
Mar 22, 1979 15:05
43 years ago
3.4

7 km
52 mi NW of Yakutat, Alaska, USAMore
Mar 22, 1979 12:16
43 years ago
3.9

8 km
USAMore
Mar 21, 1979 16:06
43 years ago
3.3

5 km
Alaska, USAMore
Mar 21, 1979 03:29
43 years ago
3.3

3 km
Yakutat Parish, 46 mi NW of Yakutat, Alaska, USAMore
Mar 20, 1979 22:04
43 years ago
3.4

3 km
57 mi NW of Yakutat, Alaska, USAMore
Mar 19, 1979 07:56
43 years ago
2.8

4 km
Alaska, USAMore
Mar 18, 1979 05:55
43 years ago
3.4

13 km
Alaska, USAMore
Mar 17, 1979 14:10
43 years ago
3.1

8 km
USAMore
Mar 16, 1979 14:42
43 years ago
3.8

1 km
CanadaMore
Mar 16, 1979 12:42
43 years ago
3.3

6 km
CanadaMore
Mar 16, 1979 10:41
43 years ago
3.8

10 km
Alaska, USAMore
Mar 16, 1979 02:47
43 years ago
3.2

15 km
Valdez-Cordova Parish, 54 mi E of Valdez, Alaska, USAMore
Mar 16, 1979 00:22
43 years ago
3.4

14 km
USAMore
Mar 15, 1979 23:15
43 years ago
3.3

10 km
Yakutat Parish, 45 mi NW of Yakutat, Alaska, USAMore
Mar 15, 1979 09:46
43 years ago
3.1

11 km
Alaska, USAMore
Mar 15, 1979 07:50
43 years ago
4.0

5 km
Alaska, USAMore
Mar 13, 1979 13:31
43 years ago
3.6

9 km
USAMore
Mar 13, 1979 07:35
43 years ago
3.4

7 km
50 mi NW of Yakutat, Alaska, USAMore
Mar 12, 1979 10:15
43 years ago
3.8

5 km
Alaska, USAMore
Mar 12, 1979 03:52
43 years ago
3.1

2 km
Alaska, USAMore
Mar 11, 1979 16:02
43 years ago
3.4

11 km
51 mi NW of Yakutat, Alaska, USAMore
Mar 11, 1979 14:47
43 years ago
3.3

11 km
Alaska, USAMore
Mar 11, 1979 12:13
43 years ago
3.1

11 km
Yakutat Parish, Alaska, USAMore
Mar 11, 1979 11:50
43 years ago
4.2

14 km
USAMore
Mar 11, 1979 07:30
43 years ago
3.8

0 km
CanadaMore
Mar 11, 1979 03:51
43 years ago
3.5

13 km
USAMore
Mar 11, 1979 00:12
43 years ago
3.2

8 km
50 mi NW of Yakutat, Alaska, USAMore
Mar 10, 1979 20:47
43 years ago
3.7

12 km
USAMore
Mar 10, 1979 17:22
43 years ago
3.5

13 km
Alaska, USAMore
Mar 10, 1979 09:16
43 years ago
3.9

5 km
Alaska, USAMore
Mar 10, 1979 05:45
43 years ago
3.5

16 km
USAMore
Mar 10, 1979 03:26
43 years ago
3.4

13 km
Alaska, USAMore
Mar 9, 1979 20:21
43 years ago
3.3

6 km
CanadaMore
Mar 9, 1979 04:55
43 years ago
3.8

7 km
CanadaMore
Mar 9, 1979 01:29
43 years ago
3.4

1 km
Alaska, USAMore
Mar 8, 1979 16:07
43 years ago
3.7

8 km
CanadaMore
Mar 8, 1979 09:39
43 years ago
3.9

9 km
CanadaMore
Mar 8, 1979 09:04
43 years ago
3.5

3 km
Alaska, USAMore
Mar 7, 1979 21:46
43 years ago
3.2

9 km
Canada, 109 km NW of Knight Island, Yakutat, Alaska, USAMore
Mar 7, 1979 15:12
43 years ago
3.0

8 km
USAMore
Mar 7, 1979 15:05
43 years ago
3.0

8 km
Alaska, USAMore
Mar 7, 1979 08:23
43 years ago
3.6

12 km
USAMore
Mar 7, 1979 05:01
43 years ago
3.3

10 km
USAMore
Mar 6, 1979 22:57
43 years ago
3.1

4 km
Canada, 91 km NW of Knight Island, Yakutat, Alaska, USAMore
Mar 6, 1979 16:05
43 years ago
3.3

12 km
USAMore
Mar 6, 1979 16:01
43 years ago
3.1

10 km
USAMore
Mar 6, 1979 10:39
43 years ago
3.3

7 km
CanadaMore
Mar 6, 1979 09:56
43 years ago
4.1

10 km
CanadaMore
Mar 6, 1979 09:34
43 years ago
4.1

7 km
CanadaMore
Mar 6, 1979 06:49
43 years ago
3.3

2 km
Canada, 89 km NW of Knight Island, Yakutat, Alaska, USAMore
Mar 5, 1979 17:40
43 years ago
3.5

8 km
CanadaMore
Mar 5, 1979 17:14
43 years ago
3.3

1 km
CanadaMore
Mar 5, 1979 03:23
43 years ago
4.2

11 km
CanadaMore
Mar 4, 1979 21:31
43 years ago
3.7

18 km
CanadaMore
Mar 4, 1979 16:43
43 years ago
3.3

4 km
USAMore
Mar 4, 1979 13:52
43 years ago
3.8

14 km
USAMore
Mar 4, 1979 11:00
43 years ago
3.3

8 km
USAMore
Mar 4, 1979 10:06
43 years ago
3.0

9 km
CanadaMore
Mar 4, 1979 09:30
43 years ago
3.4

12 km
CanadaMore
Mar 4, 1979 05:50
43 years ago
3.2

7 km
Yakutat Parish, Alaska, USAMore
Mar 4, 1979 02:44
43 years ago
3.6

16 km
Alaska, USAMore
Mar 4, 1979 00:51
43 years ago
3.7

9 km
CanadaMore
Mar 3, 1979 17:23
43 years ago
3.7

8 km
CanadaMore
Mar 3, 1979 17:18
43 years ago
3.3

13 km
USAMore
Mar 3, 1979 15:49
43 years ago
3.6

0 km
CanadaMore
Mar 2, 1979 21:57
43 years ago
3.1

15 km
55 mi NW of Yakutat, Alaska, USAMore
Mar 2, 1979 16:26
43 years ago
3.5

6 km
Alaska, USAMore
Mar 2, 1979 15:07
43 years ago
3.1

7 km
Alaska, USAMore
Mar 2, 1979 12:55
43 years ago
4.3

11 km
Alaska, USAMore
Mar 2, 1979 10:00
43 years ago
3.1

10 km
USAMore
Mar 2, 1979 09:34
43 years ago
5.4

2 km
CanadaMore
Mar 2, 1979 09:12
43 years ago
3.2

1 km
USAMore
Mar 2, 1979 08:59
43 years ago
3.4

11 km
Yakutat Parish, Alaska, USAMore
Mar 2, 1979 07:26
43 years ago
3.2

13 km
USAMore
Mar 1, 1979 17:48
43 years ago
4.1

6 km
Yakutat Parish, Alaska, USAMore
Mar 1, 1979 16:43
43 years ago
3.1

13 km
USAMore
Mar 1, 1979 15:56
43 years ago
4.0

12 km
CanadaMore
Mar 1, 1979 13:49
43 years ago
3.2

12 km
USAMore
Mar 1, 1979 12:18
43 years ago
3.0

4 km
Alaska, USAMore
Mar 1, 1979 12:12
43 years ago
3.3

8 km
USAMore
Mar 1, 1979 11:04
43 years ago
3.4

4 km
Alaska, USAMore
Mar 1, 1979 08:46
43 years ago
3.2

8 km
USAMore
Mar 1, 1979 08:29
43 years ago
3.4

14 km
USAMore
Mar 1, 1979 08:21
43 years ago
3.3

12 km
Alaska, USAMore
Mar 1, 1979 08:11
43 years ago
3.9

4 km
Alaska, USAMore
Mar 1, 1979 08:05
43 years ago
3.6

12 km
Alaska, USAMore
Mar 1, 1979 07:59
43 years ago
3.8

14 km
USAMore
Mar 1, 1979 07:08
43 years ago
5.4

11 km
Alaska, USAMore
Mar 1, 1979 06:50
43 years ago
3.4

6 km
Yakutat Parish, 47 mi NW of Yakutat, Alaska, USAMore
Mar 1, 1979 05:53
43 years ago
3.7

5 km
Alaska, USAMore
Mar 1, 1979 05:12
43 years ago
3.6

9 km
Yakutat Parish, Alaska, USAMore
Mar 1, 1979 04:38
43 years ago
3.1

11 km
Alaska, USAMore
Mar 1, 1979 04:33
43 years ago
4.1

15 km
USAMore
Mar 1, 1979 04:06
43 years ago
3.8

12 km
Alaska, USAMore
Mar 1, 1979 03:55
43 years ago
3.4

10 km
CanadaMore
Mar 1, 1979 03:25
43 years ago
3.9

5 km
CanadaMore
Mar 1, 1979 03:13
43 years ago
3.5

7 km
Alaska, USAMore
Mar 1, 1979 02:48
43 years ago
4.6

13 km
CanadaMore
Mar 1, 1979 02:27
43 years ago
4.1

0 km
CanadaMore
Mar 1, 1979 01:37
43 years ago
4.4

12 km
CanadaMore
Mar 1, 1979 01:30
43 years ago
3.7

9 km
Yakutat Parish, Alaska, USAMore
Mar 1, 1979 01:13
43 years ago
4.0

11 km
Valdez-Cordova Parish, Alaska, USAMore
Mar 1, 1979 01:01
43 years ago
2.8

6 km
USAMore
Mar 1, 1979 00:55
43 years ago
3.9

10 km
CanadaMore
Mar 1, 1979 00:47
43 years ago
3.9

16 km
USAMore
Mar 1, 1979 00:45
43 years ago
3.7

10 km
CanadaMore
Mar 1, 1979 00:09
43 years ago
4.1

2 km
CanadaMore
Mar 1, 1979 00:01
43 years ago
4.1

8 km
Alaska, USAMore
Feb 28, 1979 23:54
43 years ago
3.9

15 km
Yakutat Parish, Alaska, USAMore
Feb 28, 1979 23:12
43 years ago
3.9

15 km
USAMore
Feb 28, 1979 23:05
43 years ago
3.9

12 km
USAMore
Feb 28, 1979 22:50
43 years ago
4.3

8 km
Yakutat Parish, Alaska, USAMore
Show all

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