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Major magnitude 8.7 earthquake - 23 mi southwest of Amchitka Island, Aleutians West, Alaska, USA, on Thursday, February 4, 1965 at 05:01 GMT

Major magnitude 8.7 earthquake - 23 mi southwest of Amchitka Island, Aleutians West, Alaska, USA, on Thursday, February 4, 1965 at 05:01 GMT Major magnitude 8.7 earthquake - 23 mi southwest of Amchitka Island, Aleutians West, Alaska, USA, on Thursday, February 4, 1965 at 05:01 GMT

Major magnitude 8.7 earthquake at 30 km depth

Earthquake details

Date & timeFeb 4, 1965 05:01:22 UTC
Local time at epicenter
StatusConfirmed
Magnitude8.7
Depth30.3 km
Epicenter latitude / longitude51.251°N / 178.715°E (Bering Sea, Alaska, United States)
Antipode51.251°S / 1.285°W
Shaking intensitySevere shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoLittle Sitkin (79 km / 49 mi)
Nearby towns and cities418 km (259 mi) ESE of Attu Station (pop: 21) | Show on map | Quakes nearby
Estimated seismic energy released7.1 x 1017 joules (2 x 105 gigawatt hours, equivalent to 1.7 x 108 tons of TNT or 10575.2 atomic bombs!) | about seismic energy
Show interactive Map
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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
8.730 kmRat Islands, Aleutian Islands, 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.

Aftershocks

[More info]

Recorded aftershocks, latest first (138 quakes)

Date and timeMag
Depth
LocationDetails
Jan 14, 1968 17:43
55 years ago
6.2

10 km
Amukta Island, 222 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jan 14, 1968 12:40
55 years ago
5.6

10 km
Amukta Island, 221 mi W of Unalaska, Aleutians West, Alaska, USAMore
Jan 4, 1968 00:57
55 years ago
6.1

26 km
20 mi SW of Amukta Island, Aleutians West, Alaska, USAMore
Nov 8, 1967 17:09
55 years ago
5.8

30 km
37 mi SW of Amchitka Island, Aleutians West, Alaska, USAMore
Sep 16, 1967 08:31
55 years ago
5.6

55 km
Kagalaska Island, 21 mi SE of Adak, Aleutians West, Alaska, USAMore
Sep 13, 1967 18:41
55 years ago
5.6

25 km
21 mi SW of Saint Etienne Island, Aleutians West, Alaska, USAMore
Jul 6, 1967 13:42
56 years ago
6.1

27 km
39 mi SE of Nikolski, Aleutians West, Alaska, USAMore
Jun 20, 1967 07:38
56 years ago
5.9

28 km
89 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jun 19, 1967 17:07
56 years ago
6.1

27 km
94 mi S of Unalaska, Aleutians West, Alaska, USAMore
Jun 1, 1967 03:36
56 years ago
5.8

50 km
24 mi SE of Sedanka Island, Aleutians West, Alaska, USAMore
May 27, 1967 17:23
56 years ago
5.8

31 km
141 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Apr 29, 1967 12:25
56 years ago
5.3

25 km
34 mi SE of Tag s Island, Aleutians West, Alaska, USAMore
Apr 29, 1967 03:55
56 years ago
5.7

32 km
16 mi SE of Tag s Island, Aleutians West, Alaska, USAMore
Jan 28, 1967 17:42
56 years ago
5.8

40 km
44 mi S of Chuginadak Island, Aleutians West, Alaska, USAMore
Jan 28, 1967 16:31
56 years ago
5.6

35 km
43 mi SE of Chuginadak Island, Aleutians West, Alaska, USAMore
Jan 28, 1967 13:53
56 years ago
6.8

35 km
29 mi S of Chuginadak Island, Aleutians West, Alaska, USAMore
Jan 18, 1967 08:18
56 years ago
5.9

26 km
30 mi SE of Nikolski, Aleutians West, Alaska, USAMore
Nov 11, 1966 15:31
56 years ago
5.6

29 km
58 mi SE of Herbert Island, Aleutians West, Alaska, USAMore
Aug 17, 1966 20:58
56 years ago
5.6

42 km
40 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Aug 12, 1966 20:16
56 years ago
5.8

17 km
222 mi E of Unalaska, Aleutians West, Alaska, USAMore
Aug 7, 1966 02:13
57 years ago
6.9

20 km
308 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jul 22, 1966 10:17
57 years ago
5.7

31 km
43 mi SE of Atka, Aleutians West, Alaska, USAMore
Jul 19, 1966 19:20
57 years ago
5.6

30 km
44 mi SE of Atka, Aleutians West, Alaska, USAMore
Jul 19, 1966 01:40
57 years ago
6.4

15 km
529 km NE of Kamchatkataagy Petropavlovskaj, RussiaMore
Jul 5, 1966 02:21
57 years ago
5.8

15 km
53 mi NW of Amatignak Island, Aleutians West, Alaska, USAMore
Jul 4, 1966 18:33
57 years ago
6.8

15 km
39 mi NE of Amchitka Island, Aleutians West, Alaska, USAMore
Jul 4, 1966 02:55
57 years ago
5.8

30 km
152 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jun 11, 1966 18:13
57 years ago
5.6

35 km
15 mi SE of Tag s Island, Aleutians West, Alaska, USAMore
Jun 8, 1966 19:56
57 years ago
5.4

25 km
92 mi W of Attu Station, Aleutians West, Alaska, USAMore
Jun 2, 1966 03:27
57 years ago
5.5

21 km
174 mi SE of Attu Station, Aleutians West, Alaska, USAMore
May 19, 1966 07:06
57 years ago
6.0

32 km
40 mi E of Tigalda Island, Aleutians East, Alaska, USAMore
May 15, 1966 14:46
57 years ago
6.1

35 km
16 mi SE of Tag s Island, Aleutians West, Alaska, USAMore
Feb 26, 1966 00:33
57 years ago
5.6

35 km
Saint Etienne Island, 24 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jan 27, 1966 19:39
57 years ago
5.5

38 km
34 mi S of Rat Island, Aleutians West, Alaska, USAMore
Jan 20, 1966 14:46
57 years ago
5.6

22 km
61 mi W of Attu Station, Aleutians West, Alaska, USAMore
Jan 16, 1966 09:11
57 years ago
5.8

23 km
47 mi W of Attu Station, Aleutians West, Alaska, USAMore
Jan 13, 1966 10:41
57 years ago
5.7

23 km
48 mi W of Attu Station, Aleutians West, Alaska, USAMore
Dec 30, 1965 02:06
57 years ago
5.6

35 km
25 mi E of Tigalda Island, Aleutians East, Alaska, USAMore
Dec 22, 1965 00:28
57 years ago
5.8

27 km
145 km SE of Kamchatkataagy Petropavlovskaj, RussiaMore
Dec 5, 1965 18:14
57 years ago
5.6

35 km
16 mi S of Attu Station, Aleutians West, Alaska, USAMore
Dec 4, 1965 02:11
57 years ago
5.8

15 km
257 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Nov 23, 1965 02:17
57 years ago
5.6

30 km
28 mi NW of Amatignak Island, Aleutians West, Alaska, USAMore
Nov 22, 1965 20:25
57 years ago
5.9

25 km
27 mi W of Amatignak Island, Aleutians West, Alaska, USAMore
Nov 22, 1965 14:00
57 years ago
5.7

55 km
Little Tanaga Island, 24 mi E of Adak, Aleutians West, Alaska, USAMore
Nov 18, 1965 21:58
57 years ago
6.0

45 km
160 km NE of Kamchatkataagy Petropavlovskaj, RussiaMore
Oct 23, 1965 06:00
57 years ago
5.6

45 km
Rootok Island, 22 mi SE of Akutan, Aleutians East, Alaska, USAMore
Oct 20, 1965 11:08
57 years ago
5.6

20 km
68 mi S of Atka, Aleutians West, Alaska, USAMore
Oct 19, 1965 20:48
57 years ago
6.1

35 km
22 mi SW of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Oct 1, 1965 08:52
57 years ago
6.8

20 km
294 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Sep 27, 1965 05:09
57 years ago
5.6

35 km
124 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Sep 13, 1965 13:07
57 years ago
5.9

19 km
23 km NW of Nikolski, Kamchatka, RussiaMore
Sep 2, 1965 04:26
57 years ago
5.5

31 km
117 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jul 29, 1965 15:08
58 years ago
5.6

20 km
284 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jul 29, 1965 12:20
58 years ago
5.7

15 km
302 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jul 29, 1965 08:29
58 years ago
6.8

21 km
280 mi SW of Unalaska, Aleutians West, Alaska, USAMore
Jul 25, 1965 21:46
58 years ago
5.7

20 km
149 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jul 22, 1965 01:18
58 years ago
5.6

44 km
176 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jul 21, 1965 17:52
58 years ago
5.5

29 km
122 mi W of Attu Station, Aleutians West, Alaska, USAMore
Jul 2, 1965 20:58
58 years ago
7.8

45 km
28 mi S of Breed Island, Aleutians West, Alaska, USAMore
Jun 30, 1965 08:33
58 years ago
5.7

45 km
41 mi W of Kiska Island, Aleutians West, Alaska, USAMore
Jun 19, 1965 06:38
58 years ago
5.5

38 km
54 mi SW of Attu Station, Aleutians West, Alaska, USAMore
Jun 15, 1965 04:46
58 years ago
5.5

26 km
291 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Jun 11, 1965 02:37
58 years ago
5.6

20 km
42 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Jun 9, 1965 13:26
58 years ago
5.6

17 km
15 mi NW of Saint Etienne Island, Aleutians West, Alaska, USAMore
Jun 3, 1965 07:43
58 years ago
5.5

46 km
129 mi SE of Attu Station, Aleutians West, Alaska, USAMore
May 25, 1965 13:07
58 years ago
5.8

30 km
22 mi S of Amchitka Island, Aleutians West, Alaska, USAMore
May 23, 1965 23:46
58 years ago
6.0

29 km
42 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
May 5, 1965 23:02
58 years ago
5.6

31 km
Saint Etienne Island, 28 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Apr 26, 1965 20:29
58 years ago
5.6

37 km
19 mi S of Sanak Island, Aleutians East, Alaska, USAMore
Apr 22, 1965 18:35
58 years ago
5.1

15 km
143 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Apr 20, 1965 06:43
58 years ago
5.5

16 km
56 mi SW of Attu Station, Aleutians West, Alaska, USAMore
Apr 10, 1965 16:54
58 years ago
5.8

8 km
95 mi W of Attu Station, Aleutians West, Alaska, USAMore
Apr 8, 1965 13:43
58 years ago
6.1

25 km
18 mi S of Saint Etienne Island, Aleutians West, Alaska, USAMore
Apr 4, 1965 13:30
58 years ago
5.7

31 km
108 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Mar 31, 1965 10:46
58 years ago
5.6

48 km
283 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Mar 30, 1965 02:27
58 years ago
7.7

20 km
268 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Mar 28, 1965 13:23
58 years ago
5.8

40 km
324 km NE of Kamchatkataagy Petropavlovskaj, RussiaMore
Mar 17, 1965 14:27
58 years ago
6.0

25 km
57 mi W of Attu Station, Aleutians West, Alaska, USAMore
Mar 13, 1965 07:33
58 years ago
5.7

20 km
177 mi E of Unalaska, Aleutians West, Alaska, USAMore
Mar 5, 1965 17:59
58 years ago
5.6

35 km
19 mi SW of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Mar 5, 1965 13:42
58 years ago
5.6

35 km
24 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Mar 5, 1965 06:15
58 years ago
5.5

30 km
48 mi SE of Amchitka Island, Aleutians West, Alaska, USAMore
Mar 4, 1965 06:30
58 years ago
5.5

57 km
49 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Mar 3, 1965 16:47
58 years ago
6.3

26 km
79 mi W of Attu Station, Aleutians West, Alaska, USAMore
Mar 1, 1965 19:22
58 years ago
5.7

34 km
21 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 25, 1965 05:22
58 years ago
6.2

20 km
44 mi SW of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 22, 1965 09:14
58 years ago
5.5

32 km
37 mi S of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 19, 1965 18:52
58 years ago
5.6

12 km
36 mi SW of Amchitka Island, Aleutians West, Alaska, USAMore
Feb 18, 1965 23:13
58 years ago
5.8

40 km
18 mi SE of Amchitka Island, Aleutians West, Alaska, USAMore
Feb 17, 1965 10:18
58 years ago
5.7

30 km
47 mi SW of Kiska Island, Aleutians West, Alaska, USAMore
Feb 15, 1965 01:25
58 years ago
5.8

20 km
40 mi S of Amchitka Island, Aleutians West, Alaska, USAMore
Feb 12, 1965 00:55
58 years ago
5.8

25 km
49 mi S of Attu Station, Aleutians West, Alaska, USAMore
Feb 12, 1965 00:43
58 years ago
5.4

34 km
148 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 9, 1965 17:37
58 years ago
6.0

30 km
54 mi W of Attu Station, Aleutians West, Alaska, USAMore
Feb 9, 1965 04:35
58 years ago
5.5

40 km
274 mi E of Attu Station, Aleutians West, Alaska, USAMore
Feb 8, 1965 15:46
58 years ago
5.9

33 km
36 km W of Nikolski, Kamchatka, RussiaMore
Feb 7, 1965 09:25
58 years ago
5.8

25 km
18 mi S of Amchitka Island, Aleutians West, Alaska, USAMore
Feb 7, 1965 04:11
58 years ago
5.7

25 km
56 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Feb 7, 1965 02:17
58 years ago
5.7

18 km
110 mi S of Attu Station, Aleutians West, Alaska, USAMore
Feb 6, 1965 21:02
58 years ago
5.6

10 km
50 mi W of Attu Station, Aleutians West, Alaska, USAMore
Feb 6, 1965 18:10
58 years ago
5.8

25 km
55 mi SW of Kiska Island, Aleutians West, Alaska, USAMore
Feb 6, 1965 16:50
58 years ago
6.3

23 km
131 mi S of King Cove, Aleutians East, Alaska, USAMore
Feb 6, 1965 14:11
58 years ago
5.7

18 km
34 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 6, 1965 12:22
58 years ago
5.7

37 km
115 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 6, 1965 07:14
58 years ago
5.6

30 km
54 mi S of Attu Station, Aleutians West, Alaska, USAMore
Feb 6, 1965 04:02
58 years ago
6.2

28 km
52 mi SE of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Feb 6, 1965 01:40
58 years ago
6.4

18 km
196 mi E of Unalaska, Aleutians West, Alaska, USAMore
Feb 5, 1965 22:16
58 years ago
5.6

30 km
51 mi SW of Kiska Island, Aleutians West, Alaska, USAMore
Feb 5, 1965 20:47
58 years ago
6.0

20 km
96 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 5, 1965 19:00
58 years ago
5.5

27 km
35 mi SW of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 5, 1965 14:08
58 years ago
5.8

35 km
92 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 5, 1965 13:38
58 years ago
5.7

30 km
35 mi S of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 5, 1965 09:32
58 years ago
6.3

40 km
16 mi SW of Ingenstrem Rocks Island, Aleutians West, Alaska, USAMore
Feb 5, 1965 06:39
58 years ago
5.7

25 km
103 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 5, 1965 06:25
58 years ago
5.5

40 km
23 mi SW of Kiska Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 22:30
58 years ago
5.7

10 km
50 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 18:34
58 years ago
5.8

25 km
120 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 15:51
58 years ago
5.8

25 km
97 mi W of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 14:18
58 years ago
6.4

25 km
88 mi W of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 12:50
58 years ago
5.6

20 km
98 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 12:06
58 years ago
6.5

30 km
51 mi W of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 09:52
58 years ago
5.6

4 km
139 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:59
58 years ago
5.5

34 km
Saint Etienne Island, 30 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:40
58 years ago
7.3

30 km
28 mi E of Amchitka Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:33
58 years ago
5.6

20 km
37 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:06
58 years ago
5.6

44 km
46 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:06
58 years ago
5.7

32 km
53 mi SE of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 08:04
58 years ago
5.9

30 km
48 mi S of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 07:43
58 years ago
5.7

24 km
30 mi SW of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 07:23
58 years ago
5.7

10 km
74 mi S of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 07:14
58 years ago
5.9

20 km
84 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 07:11
58 years ago
5.9

25 km
235 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 06:52
58 years ago
5.5

33 km
24 mi SW of Saint Etienne Island, Aleutians West, Alaska, USAMore
Feb 4, 1965 06:39
58 years ago
5.8

25 km
137 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 06:37
58 years ago
5.7

25 km
54 mi SW of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 06:04
58 years ago
6.0

30 km
115 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 05:48
58 years ago
5.8

33 km
122 mi SE of Attu Station, Aleutians West, Alaska, USAMore
Feb 4, 1965 05:19
58 years ago
5.7

35 km
169 mi S of Attu Station, Aleutians West, Alaska, USAMore
Show all

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