Earthquake Information for Unalaska, Alaska

Unalaska, AK has a very high earthquake risk, with a total of 440 earthquakes since 1931. The USGS database shows that there is a 99.96% chance of a major earthquake within 50km of Unalaska, AK within the next 50 years. The largest earthquake within 30 miles of Unalaska, AK was a 5.9 Magnitude in 2006.

Risk Level:
Very High

Total Number of Earthquakes in Unalaska since 1931 within 30 miles

440

Probability of A 5.0 Earthquake within next 50 years

99.96%

Most Recent
Largest

4/20/2024 - 0.1 mag, 4.0mi depth 6.12141 mi from Akutan, AK
3/21/2024 - 0.4 mag, 4.1mi depth 3.84261 mi from Unalaska, AK
12/26/2023 - 0.2 mag, 6.3mi depth 9.70117 mi from Akutan, AK
11/1/2023 - 1.4 mag, 9.4mi depth 8.56954 mi from Unalaska, AK
8/13/2023 - 0.6 mag, 10.9mi depth 17.6533 mi from Akutan, AK
6/26/2023 - 1.8 mag, 71.6mi depth 23.4446 mi from Unalaska, AK
4/9/2023 - 0.4 mag, 2.5mi depth 7.2823 mi from Akutan, AK
4/9/2023 - 0.9 mag, 3.8mi depth 7.04378 mi from Akutan, AK
4/8/2023 - 1.0 mag, 5.1mi depth 3.57057 mi from Unalaska, AK
4/6/2023 - -0.1 mag, 5.4mi depth 3.35816 mi from Unalaska, AK
5/15/2022 - 3.6 mag, 72.2mi depth 26.8522 mi from Unalaska, AK
4/29/2022 - 3.5 mag, 74.0mi depth 19.4228 mi from Unalaska, AK
3/22/2022 - 1.5 mag, 76.6mi depth 26.2806 mi from Unalaska, AK
1/28/2022 - 2.1 mag, 73.7mi depth 20.4554 mi from Unalaska, AK
1/28/2022 - 2.6 mag, 73.3mi depth 27.0171 mi from Unalaska, AK
10/29/2021 - 0.8 mag, 8.4mi depth 9.99853 mi from Unalaska, AK
10/29/2021 - 0.2 mag, 8.9mi depth 9.90549 mi from Unalaska, AK
9/16/2021 - 1.6 mag, 7.1mi depth 14.4068 mi from Unalaska, AK
5/20/2021 - 3.3 mag, 73.4mi depth 24.3894 mi from Unalaska, AK
2/26/2021 - 0.7 mag, 4.6mi depth 6.49076 mi from Akutan, AK
2/2/2021 - 0.0 mag, 7.6mi depth 11.0188 mi from Unalaska, AK
10/7/2020 - 0.1 mag, 17.8mi depth 16.2403 mi from Unalaska, AK
7/8/2020 - 0.2 mag, 7.3mi depth 10.1457 mi from Unalaska, AK
7/8/2020 - 0.4 mag, 8.0mi depth 9.76194 mi from Unalaska, AK
7/7/2020 - 0.4 mag, 7.9mi depth 10.476 mi from Unalaska, AK
7/7/2020 - 0.4 mag, 8.1mi depth 9.51792 mi from Unalaska, AK
7/7/2020 - 1.6 mag, 7.5mi depth 9.76408 mi from Unalaska, AK
7/2/2020 - 1.7 mag, 7.6mi depth 10.1287 mi from Unalaska, AK
7/2/2020 - 1.0 mag, 7.9mi depth 10.0694 mi from Unalaska, AK
7/2/2020 - 0.6 mag, 5.7mi depth 10.6955 mi from Unalaska, AK
7/2/2020 - 0.8 mag, 7.5mi depth 10.2232 mi from Unalaska, AK
6/28/2020 - 3.7 mag, 10.0mi depth 11.1063 mi from Unalaska, AK
6/22/2020 - 1.0 mag, 7.2mi depth 10.9697 mi from Unalaska, AK
6/17/2020 - 3.2 mag, 13.7mi depth 12.7513 mi from Unalaska, AK
6/16/2020 - 3.1 mag, 8.3mi depth 10.4836 mi from Unalaska, AK
6/16/2020 - 3.3 mag, 11.9mi depth 11.7258 mi from Unalaska, AK
6/15/2020 - 1.2 mag, 9.1mi depth 10.0532 mi from Unalaska, AK
6/15/2020 - 3.4 mag, 8.4mi depth 9.67588 mi from Unalaska, AK
6/15/2020 - 4.5 mag, 11.3mi depth 11.0963 mi from Unalaska, AK
6/15/2020 - 4.1 mag, 11.4mi depth 5.87018 mi from Unalaska, AK
9/14/2019 - 5.4 mag, 73.1mi depth 11.9618 mi from Akutan, AK
6/18/2019 - 0.5 mag, 6.8mi depth 14.9491 mi from Unalaska, AK
11/15/2018 - 4.6 mag, 73.4mi depth 15.1523 mi from Unalaska, AK
10/16/2018 - -0.1 mag, 5.4mi depth 6.71368 mi from Akutan, AK
10/4/2017 - 2.6 mag, 69.3mi depth 25.9376 mi from Akutan, AK
6/29/2016 - 2.8 mag, 81.4mi depth 18.0346 mi from Unalaska, AK
12/22/2014 - 1.1 mag, 4.6mi depth 4.67117 mi from Akutan, AK
7/7/2014 - 0.8 mag, 15.0mi depth 14.8959 mi from Unalaska, AK
6/10/2014 - 1.6 mag, 17.4mi depth 24.3222 mi from Unalaska, AK
5/1/2014 - 1.6 mag, 39.6mi depth 25.6858 mi from Unalaska, AK

9/1/2006 - 5.9 mag, 75.6mi depth 6.328 mi from Unalaska, AK
4/21/1972 - 5.8 mag, 107.4mi depth 12.7365 mi from Unalaska, AK
9/14/2019 - 5.4 mag, 73.1mi depth 11.9618 mi from Akutan, AK
10/20/1991 - 5.4 mag, 33.0mi depth 17.4739 mi from Unalaska, AK
12/22/1988 - 5.3 mag, 76.3mi depth 12.403 mi from Unalaska, AK
3/2/1997 - 5.2 mag, 57.2mi depth 25.7379 mi from Unalaska, AK
8/20/2010 - 5.2 mag, 108.1mi depth 14.9517 mi from Akutan, AK
5/21/1985 - 5.1 mag, 70.7mi depth 16.3476 mi from Unalaska, AK
1/16/1998 - 5.1 mag, 134.2mi depth 6.1617 mi from Akutan, AK
10/19/1991 - 5.0 mag, 33.0mi depth 29.1723 mi from Unalaska, AK
9/1/1987 - 5.0 mag, 33.0mi depth 29.5503 mi from Unalaska, AK
10/9/1991 - 4.9 mag, 33.0mi depth 19.7665 mi from Unalaska, AK
10/19/1991 - 4.9 mag, 33.0mi depth 23.2056 mi from Unalaska, AK
8/25/1978 - 4.9 mag, 49.0mi depth 29.3133 mi from Unalaska, AK
9/1/1987 - 4.9 mag, 33.0mi depth 27.2097 mi from Unalaska, AK
8/21/1973 - 4.9 mag, 96.0mi depth 6.2624 mi from Unalaska, AK
2/13/1989 - 4.9 mag, 33.0mi depth 22.8207 mi from Akutan, AK
12/30/1987 - 4.8 mag, 33.0mi depth 17.4279 mi from Akutan, AK
3/22/1976 - 4.8 mag, 79.0mi depth 16.1382 mi from Akutan, AK
6/19/2011 - 4.8 mag, 109.0mi depth 26.6151 mi from Unalaska, AK
7/28/1992 - 4.8 mag, 33.0mi depth 27.5413 mi from Unalaska, AK
6/22/1982 - 4.8 mag, 89.8mi depth 4.9045 mi from Unalaska, AK
3/8/1984 - 4.7 mag, 138.4mi depth 28.3022 mi from Unalaska, AK
2/6/1988 - 4.7 mag, 33.0mi depth 29.7237 mi from Unalaska, AK
3/11/1996 - 4.7 mag, 5.0mi depth 13.5849 mi from Akutan, AK
9/25/1984 - 4.7 mag, 65.1mi depth 17.9883 mi from Unalaska, AK
7/6/1987 - 4.7 mag, 33.0mi depth 25.3869 mi from Unalaska, AK
9/21/1996 - 4.7 mag, 100.4mi depth 25.396 mi from Unalaska, AK
3/14/1996 - 4.7 mag, 5.0mi depth 9.6412 mi from Akutan, AK
5/26/1987 - 4.7 mag, 33.0mi depth 20.5726 mi from Unalaska, AK
2/28/1987 - 4.6 mag, 10.0mi depth 25.1371 mi from Unalaska, AK
8/27/1988 - 4.6 mag, 33.0mi depth 27.4034 mi from Unalaska, AK
11/15/2018 - 4.6 mag, 73.4mi depth 15.1523 mi from Unalaska, AK
10/19/1991 - 4.6 mag, 33.0mi depth 27.7663 mi from Unalaska, AK
9/1/1987 - 4.6 mag, 33.0mi depth 24.4695 mi from Unalaska, AK
9/1/1987 - 4.6 mag, 33.0mi depth 25.0118 mi from Unalaska, AK
8/8/1987 - 4.6 mag, 33.0mi depth 28.2915 mi from Unalaska, AK
5/24/1985 - 4.6 mag, 100.0mi depth 28.1705 mi from Unalaska, AK
9/1/1987 - 4.6 mag, 33.0mi depth 24.1654 mi from Unalaska, AK
5/29/1987 - 4.6 mag, 33.0mi depth 27.1377 mi from Unalaska, AK
9/22/1979 - 4.6 mag, 33.0mi depth 21.5658 mi from Unalaska, AK
10/20/1991 - 4.5 mag, 33.0mi depth 29.9137 mi from Unalaska, AK
6/15/2020 - 4.5 mag, 11.3mi depth 11.0963 mi from Unalaska, AK
3/18/1993 - 4.5 mag, 33.0mi depth 28.1085 mi from Unalaska, AK
4/10/1988 - 4.5 mag, 33.0mi depth 27.7995 mi from Unalaska, AK
10/14/1980 - 4.5 mag, 85.0mi depth 10.9514 mi from Akutan, AK
9/1/1987 - 4.5 mag, 33.0mi depth 24.0336 mi from Unalaska, AK
6/13/1987 - 4.5 mag, 33.0mi depth 23.5654 mi from Unalaska, AK
3/14/1996 - 4.4 mag, 5.0mi depth 9.0672 mi from Akutan, AK
6/2/2001 - 4.4 mag, 78.1mi depth 21.9759 mi from Unalaska, AK

View All

Earthquake Probability for Unalaska, AK

View the probability of a major earthquake within the next 50 years in Unalaska, AK.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

(within 31 km/51 miles above magnitude)

5.0

99.96%

5.1

99.82%

5.2

99.82%

5.2

99.46%

5.3

98.65%

5.4

97.14%

5.5

94.73%

5.6

91.30%

5.7

86.89%

5.8

81.65%

5.9

75.84%

6.0

69.72%

6.1

62.73%

6.2

55.82%

6.3

49.02%

6.4

42.66%

6.5

36.48%

6.6

30.77%

6.7

25.43%

6.8

20.38%

6.9

15.88%

7.0

11.77%

7.1

8.16%

7.2

4.91%

7.3

2.01%

7.4

0.94%

7.5

0.00%

7.6

0.00%

7.7

0.00%

7.8

0.00%

7.9

0.00%

8.0

0.00%

8.1

0.00%

8.2

0.00%

8.3

0.00%

8.4

0.00%

8.5

0.00%

8.6

0.00%

8.7

0.00%

8.8

0.00%

8.9

0.00%

9.0

0.00%

9.1

0.00%

9.2

0.00%

Earthquake Count for Unalaska, AK

View the number of earthquake incidents in Unalaska, AK by year that are more than 2.5 Magnitude.

List of Earthquake Incidents for Unalaska, AK

Total Number of Earthquakes in Unalaska, AK within 30 miles. All distances and depths in the table are measured in miles.

04/20/2024

0.1

4.0

6.12

Earthquake Information for Unalaska, Alaska

Earthquake Probability for Unalaska, AK

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

Earthquake Count for Unalaska, AK

List of Earthquake Incidents for Unalaska, AK

Risk Of Natural Disasters In Unalaska, AK

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