All earthquakes

Alaska earthquakes

827 earthquakes of magnitude 2.5 or more were located in Alaska in the past 30 days: 93 in the past week and 13 in the past 24 hours. The largest: M6.5 169 km W of Nikolski, Alaska, Sep 17, 5:19 AM HADT. 431 smaller quakes were recorded in the past 7 days.

From the USGS, checked Sun, Sep 20, 2026, 12:18 PM AKDT. Times are local to each quake.

Map

Where every quake below was located in Alaska. Select one for its page.

Open the live map with earthquakes

Past 30 days

Magnitude 2.5 and up, newest first; the 300 most recent of 827.

Smaller quakes, past 7 days

Under magnitude 2.5, which few people feel; the 150 most recent of 431.

Largest on record in Alaska

The 25 largest in the USGS catalog since 1900, of magnitude 3 and up. Older magnitudes are estimates from historical accounts and early instruments.

Mag.	Date	Where	Depth
9.2	Mar 27, 1964	The 1964 Prince William Sound, Alaska Earthquake	25 km
8.7	Feb 4, 1965	1965 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake	30 km
8.6	Apr 1, 1946	The 1946 Unimak Island, Alaska Earthquake	15 km
8.6	Mar 9, 1957	1957 Atka, Alaska Earthquake	25 km
8.3	Aug 17, 1906	1906 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake	110 km
8.2	Nov 10, 1938	1938 Semidi Islands, Alaska Earthquake	35 km
8.2	Jul 28, 2021	2021 Chignik, Alaska Earthquake	35 km
8.0	May 7, 1986	1986 Atka, Alaska Earthquake	33 km
7.9	Nov 30, 1987	200 km WSW of Yakutat, Alaska	10 km
7.9	Jun 9, 1996	77 km WSW of Adak, Alaska	33 km
7.9	Nov 3, 2002	2002 Denali Fault, Alaska Earthquake	4 km
7.9	Jun 24, 2014	Rat Islands, Aleutian Islands, Alaska	109 km
7.9	Jan 23, 2018	261 km SE of Chiniak, Alaska	14 km
7.9	Oct 9, 1900	Kodiak Island region, Alaska	20 km
7.9	Dec 17, 1929	93 km NW of Attu Station, Alaska	20 km
7.8	Mar 6, 1929	234 km SSW of Nikolski, Alaska	15 km
7.8	Jul 9, 1958	22 km W of Elfin Cove, Alaska	10 km
7.8	Jul 2, 1965	81 km E of Nikolski, Alaska	39 km
7.8	Mar 6, 1988	Gulf of Alaska	10 km
7.8	Nov 17, 2003	Rat Islands, Aleutian Islands, Alaska	33 km
7.8	Jul 21, 2020	2020 Perryville, Alaska Earthquake	28 km
7.6	Mar 30, 1965	Rat Islands, Aleutian Islands, Alaska	24 km
7.6	Jul 30, 1972	55 km SW of Sitka, Alaska	20 km
7.6	Feb 2, 1975	36 km NE of Attu Station, Alaska	10 km
7.6	Oct 19, 2020	2020 Sand Point, Alaska Earthquake	28 km

By year

Every year the USGS catalog covers.

2020s2020 2021 2022 2023 2024 2025 2026
2010s2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
2000s2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
1990s1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
1980s1980 1981 1982 1983 1984 1985 1986 1987 1988 1989
1970s1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
1960s1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
1950s1950 1951 1952 1953 1954 1955 1956 1957 1958 1959
1940s1940 1941 1942 1943 1944 1945 1946 1947 1948 1949
1930s1930 1931 1932 1933 1934 1935 1936 1937 1938 1939
1920s1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
1910s1910 1911 1912 1913 1914 1915 1916 1917 1918 1919
1900s1900 1901 1902 1903 1904 1905 1906 1907 1908 1909

What this means

Magnitude measures the energy a quake releases: each step up is about 32 times more energy, so an M6 releases about a thousand times the energy of an M4. Intensity measures the shaking at one place, which depends on the distance, the depth and the ground. One quake has one magnitude and many intensities.

The Modified Mercalli intensity scale
Intensity	Shaking	What people notice
I	Not felt	Recorded by instruments only.
II to III	Weak	Felt by a few people at rest, mostly on upper floors; hanging objects may swing.
IV	Light	Felt indoors by many. Dishes, windows and doors rattle; like a heavy truck passing.
V	Moderate	Felt by nearly everyone; sleepers wake. Some dishes break and unstable objects tip over.
VI	Strong	Felt by all; heavy furniture moves, plaster cracks. Damage is slight.
VII	Very strong	Damage slight to moderate in ordinary buildings, considerable in poorly built ones.
VIII	Severe	Considerable damage in ordinary buildings, with partial collapse; chimneys and walls fall.
IX and up	Violent to extreme	Heavy damage even in well-designed buildings; many shifted off foundations.

Did I just feel an earthquake?

A quake appears in these lists within minutes: a few for the US, up to twenty for a quake abroad. Search your town above, or open your state. If it was a quake, tell the USGS through its Did You Feel It? form. If shaking starts: drop, cover and hold on; stay indoors until it stops; near the coast, move to high ground after strong or long shaking without waiting for a warning.

By state

Every state, with the quakes of magnitude 2.5 or more located there in the past 30 days. Each state page adds the smaller quakes of the past week and its largest on record.

Sources

Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.