Earthquake Information for Port Graham, Alaska

Port Graham, AK has a very high earthquake risk, with a total of 2,637 earthquakes since 1931. The USGS database shows that there is a 99.99% chance of a major earthquake within 50km of Port Graham, AK within the next 50 years. The largest earthquake within 30 miles of Port Graham, AK was a 6.5 Magnitude in 1963.

Risk Level:
Very High

Total Number of Earthquakes in Port Graham since 1931 within 30 miles

2,637

Probability of A 5.0 Earthquake within next 50 years

99.99%

Most Recent
Largest

4/25/2024 - 2.0 mag, 33.9mi depth 20.0149 mi from Nanwalek, AK
4/24/2024 - 1.8 mag, 60.1mi depth 21.1026 mi from Nanwalek, AK
4/20/2024 - 3.2 mag, 71.0mi depth 11.3781 mi from Anchor Point, AK
4/20/2024 - 1.8 mag, 67.4mi depth 19.0788 mi from Anchor Point, AK
4/16/2024 - 1.4 mag, 59.4mi depth 19.0135 mi from Anchor Point, AK
4/14/2024 - 2.0 mag, 16.2mi depth 8.31696 mi from Seldovia, AK
4/13/2024 - 1.9 mag, 68.9mi depth 14.7916 mi from Nanwalek, AK
4/12/2024 - 1.8 mag, 66.6mi depth 20.9594 mi from Anchor Point, AK
4/6/2024 - 1.9 mag, 52.1mi depth 20.2853 mi from Anchor Point, AK
4/3/2024 - 1.5 mag, 50.3mi depth 4.18022 mi from Port Graham, AK
3/28/2024 - 2.1 mag, 75.7mi depth 3.78586 mi from Nanwalek, AK
3/27/2024 - 1.7 mag, 66.6mi depth 21.7375 mi from Nanwalek, AK
3/18/2024 - 1.9 mag, 67.8mi depth 25.0343 mi from Nanwalek, AK
3/18/2024 - 1.8 mag, 57.5mi depth 4.19837 mi from Seldovia, AK
3/15/2024 - 1.9 mag, 76.4mi depth 19.6766 mi from Nanwalek, AK
3/15/2024 - 2.3 mag, 32.4mi depth 19.6752 mi from Nanwalek, AK
3/8/2024 - 1.9 mag, 71.9mi depth 25.6571 mi from Nanwalek, AK
3/7/2024 - 1.8 mag, 54.3mi depth 3.39731 mi from Nanwalek, AK
3/6/2024 - 2.6 mag, 33.4mi depth 10.8005 mi from Seldovia, AK
3/6/2024 - 2.5 mag, 66.5mi depth 3.60659 mi from Nanwalek, AK
3/4/2024 - 1.9 mag, 64.1mi depth 20.7769 mi from Nanwalek, AK
3/1/2024 - 2.2 mag, 43.2mi depth 13.0036 mi from Anchor Point, AK
2/28/2024 - 2.5 mag, 26.3mi depth 22.2573 mi from Nanwalek, AK
2/26/2024 - 2.8 mag, 71.3mi depth 24.7539 mi from Nanwalek, AK
2/22/2024 - 1.9 mag, 54.7mi depth 23.8933 mi from Nanwalek, AK
2/12/2024 - 2.0 mag, 74.4mi depth 27.3096 mi from Nanwalek, AK
2/12/2024 - 2.0 mag, 33.1mi depth 3.37508 mi from Halibut Cove, AK
2/3/2024 - 1.7 mag, 81.1mi depth 19.4903 mi from Anchor Point, AK
1/30/2024 - 1.8 mag, 46.1mi depth 20.1532 mi from Nanwalek, AK
1/30/2024 - 2.4 mag, 39.6mi depth 2.58935 mi from Seldovia Village, AK
1/29/2024 - 1.9 mag, 43.0mi depth 7.33804 mi from Homer, AK
1/27/2024 - 2.6 mag, 49.9mi depth 6.40819 mi from Homer, AK
1/19/2024 - 2.1 mag, 53.0mi depth 8.72227 mi from Nanwalek, AK
1/19/2024 - 1.7 mag, 69.9mi depth 16.8151 mi from Anchor Point, AK
1/10/2024 - 1.7 mag, 82.4mi depth 19.78 mi from Anchor Point, AK
1/9/2024 - 2.1 mag, 45.4mi depth 8.09821 mi from Nanwalek, AK
1/6/2024 - 1.7 mag, 66.6mi depth 22.2475 mi from Nanwalek, AK
1/6/2024 - 3.1 mag, 43.0mi depth 2.37621 mi from Seldovia Village, AK
1/6/2024 - 4.7 mag, 49.4mi depth 2.41254 mi from Seldovia Village, AK
12/31/2023 - 2.6 mag, 39.3mi depth 9.37808 mi from Nanwalek, AK
12/30/2023 - 1.6 mag, 79.9mi depth 21.3041 mi from Anchor Point, AK
12/28/2023 - 2.0 mag, 65.9mi depth 20.066 mi from Nanwalek, AK
12/26/2023 - 2.1 mag, 68.6mi depth 26.7969 mi from Nanwalek, AK
12/24/2023 - 2.2 mag, 49.9mi depth 3.5153 mi from Diamond Ridge, AK
12/23/2023 - 3.1 mag, 52.6mi depth 6.3104 mi from Seldovia, AK
12/16/2023 - 2.5 mag, 54.5mi depth 16.9415 mi from Anchor Point, AK
12/13/2023 - 2.2 mag, 56.8mi depth 17.7065 mi from Nanwalek, AK
12/13/2023 - 2.3 mag, 67.8mi depth 23.8904 mi from Nanwalek, AK
12/12/2023 - 1.9 mag, 40.2mi depth 11.8453 mi from Nanwalek, AK
12/12/2023 - 2.1 mag, 59.1mi depth 20.5469 mi from Nanwalek, AK

6/24/1963 - 6.5 mag, 31.2mi depth 7.0669 mi from Nanwalek, AK
2/10/2004 - 5.6 mag, 65.6mi depth 4.8744 mi from Nanwalek, AK
5/5/1999 - 5.5 mag, 65.4mi depth 12.7925 mi from Port Graham, AK
3/19/2023 - 5.4 mag, 65.4mi depth 12.1076 mi from Anchor Point, AK
2/12/1978 - 5.4 mag, 72.0mi depth 25.9582 mi from Nanwalek, AK
3/27/2008 - 5.3 mag, 68.5mi depth 23.5304 mi from Nanwalek, AK
4/30/2009 - 5.0 mag, 47.2mi depth 18.9434 mi from Port Graham, AK
2/5/2006 - 5.0 mag, 47.8mi depth 3.3934 mi from Seldovia, AK
1/12/1982 - 4.8 mag, 67.5mi depth 21.2858 mi from Nanwalek, AK
10/9/1985 - 4.8 mag, 97.7mi depth 15.2378 mi from Nanwalek, AK
12/11/1993 - 4.8 mag, 87.8mi depth 22.5056 mi from Nanwalek, AK
1/31/1981 - 4.8 mag, 62.0mi depth 24.2975 mi from Nanwalek, AK
6/15/2000 - 4.8 mag, 46.2mi depth 9.2703 mi from Port Graham, AK
7/6/1982 - 4.8 mag, 68.5mi depth 26.1372 mi from Nanwalek, AK
1/6/2024 - 4.7 mag, 49.4mi depth 2.41254 mi from Seldovia Village, AK
12/8/1977 - 4.7 mag, 65.0mi depth 7.5944 mi from Seldovia Village, AK
5/16/1989 - 4.6 mag, 48.7mi depth 7.1744 mi from Homer, AK
9/22/1985 - 4.6 mag, 53.4mi depth 24.5567 mi from Port Graham, AK
7/2/2019 - 4.6 mag, 54.6mi depth 32.4267 mi from Homer, AK
6/10/1987 - 4.6 mag, 61.4mi depth 15.1614 mi from Nanwalek, AK
2/10/1974 - 4.6 mag, 61.0mi depth 24.5278 mi from Nanwalek, AK
8/23/1994 - 4.6 mag, 87.7mi depth 24.9874 mi from Nanwalek, AK
10/4/1984 - 4.6 mag, 62.5mi depth 14.346 mi from Port Graham, AK
5/21/2002 - 4.5 mag, 65.8mi depth 24.6832 mi from Nanwalek, AK
5/29/1986 - 4.5 mag, 61.4mi depth 16.6458 mi from Nanwalek, AK
7/15/1998 - 4.5 mag, 69.1mi depth 18.2587 mi from Nanwalek, AK
7/13/2018 - 4.5 mag, 32.5mi depth 23.6514 mi from Homer, AK
7/21/1981 - 4.5 mag, 84.4mi depth 12.7514 mi from Nanwalek, AK
2/2/1993 - 4.5 mag, 77.7mi depth 22.0793 mi from Nanwalek, AK
5/12/1985 - 4.5 mag, 101.9mi depth 15.6217 mi from Nanwalek, AK
7/2/1981 - 4.4 mag, 152.0mi depth 22.1032 mi from Nanwalek, AK
5/7/1982 - 4.4 mag, 83.2mi depth 26.2303 mi from Nanwalek, AK
5/17/2013 - 4.4 mag, 56.5mi depth 2.7726 mi from Nanwalek, AK
8/3/1985 - 4.4 mag, 92.3mi depth 14.7385 mi from Anchor Point, AK
7/28/2012 - 4.4 mag, 63.4mi depth 4.8016 mi from Nanwalek, AK
7/4/1997 - 4.4 mag, 40.5mi depth 6.3678 mi from Halibut Cove, AK
1/26/2020 - 4.4 mag, 67.7mi depth 39.8544 mi from Anchor Point, AK
12/5/2006 - 4.4 mag, 58.0mi depth 6.979 mi from Anchor Point, AK
3/2/1980 - 4.4 mag, 13.0mi depth 4.4013 mi from Kachemak, AK
4/20/1979 - 4.4 mag, 85.0mi depth 15.459 mi from Nanwalek, AK
8/7/1983 - 4.3 mag, 100.3mi depth 13.0755 mi from Anchor Point, AK
5/27/1979 - 4.3 mag, 59.0mi depth 15.7317 mi from Seldovia Village, AK
6/9/2011 - 4.3 mag, 83.3mi depth 25.8672 mi from Nanwalek, AK
9/30/2017 - 4.3 mag, 81.2mi depth 21.141 mi from Anchor Point, AK
11/17/1996 - 4.3 mag, 81.3mi depth 23.4526 mi from Nanwalek, AK
1/26/2021 - 4.3 mag, 34.7mi depth 13.5571 mi from Port Graham, AK
9/11/1995 - 4.2 mag, 56.5mi depth 5.4545 mi from Port Graham, AK
10/27/2018 - 4.2 mag, 53.9mi depth 11.7788 mi from Anchor Point, AK
12/14/2002 - 4.2 mag, 72.4mi depth 12.5898 mi from Seldovia Village, AK
3/12/2018 - 4.2 mag, 39.1mi depth 32.7478 mi from Homer, AK

View All

Earthquake Probability for Port Graham, AK

View the probability of a major earthquake within the next 50 years in Port Graham, 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

99.99%

5.1

99.97%

5.2

99.97%

5.2

99.87%

5.3

99.64%

5.4

99.14%

5.5

98.27%

5.6

96.93%

5.7

95.11%

5.8

92.85%

5.9

90.25%

6.0

87.44%

6.1

83.99%

6.2

80.48%

6.3

76.85%

6.4

73.37%

6.5

70.07%

6.6

66.93%

6.7

64.06%

6.8

61.36%

6.9

58.88%

7.0

56.52%

7.1

50.71%

7.2

44.94%

7.3

39.33%

7.4

34.07%

7.5

29.04%

7.6

25.14%

7.7

21.41%

7.8

17.78%

7.9

14.29%

8.0

10.79%

8.1

7.40%

8.2

7.40%

8.3

7.40%

8.4

7.40%

8.5

7.40%

8.6

7.40%

8.7

7.40%

8.8

7.40%

8.9

7.40%

9.0

7.40%

9.1

7.40%

9.2

7.40%

Earthquake Count for Port Graham, AK

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

List of Earthquake Incidents for Port Graham, AK

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

04/25/2024

2.0

33.9

20.01

Earthquake Information for Port Graham, Alaska

Earthquake Probability for Port Graham, AK

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

Earthquake Count for Port Graham, AK

List of Earthquake Incidents for Port Graham, AK

Risk Of Natural Disasters In Port Graham, AK

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