Last 24 hours 2
Past 7 days 2
Most recent M0.5, Nov 12, 4:46 am UTC
Largest on record M7.2 (1959)
M3.5+ since 1900 306
M5+ since 1900 26 M7.2, 1959 M6.6, 1925 M6.4, 1925 M6.1, 1947 M6.1, 1935 M6.0, 1959 M6.0, 1959 M5.9, 1935 M5.9, 1935 M5.8, 2017 M5.6, 2005 M5.5, 1952 M5.5, 1925 M5.5, 1925 M5.5, 1925 M5.4, 1926 M5.4, 1910 M5.4, 1909 M5.2, 1964 M5.2, 1977 M5.1, 1965 M5.1, 1999 M5.0, 1959 M5.0, 1959 M5.0, 1935 M5.0, 2017 M4.9, 1965 M4.9, 1928 M4.8, 1966 M4.8, 1974 M4.8, 1985 M4.7, 1969 M4.7, 1959 M4.7, 1929 M4.7, 1977 M4.7, 1998 M4.6, 1964 M4.6, 1964 M4.6, 1977 M4.6, 1975 M4.6, 1982 M4.6, 2019 M4.5, 1969 M4.5, 1963 M4.5, 1978 M4.5, 1977 M4.5, 2005 M4.4, 1959 M4.4, 1958 M4.4, 1979 M4.4, 1975 M4.4, 1974 M4.4, 1982 M4.4, 2011 M4.4, 2007 M4.4, 2006 M4.4, 2017 M4.3, 1969 M4.3, 1969 M4.3, 1978 M4.3, 1975 M4.3, 1973 M4.3, 1982 M4.3, 1998 M4.3, 2006 M4.3, 2016 M4.3, 2016 M4.2, 1975 M4.2, 1972 M4.2, 1983 M4.2, 1982 M4.2, 1980 M4.2, 2009 M4.2, 2019 M4.2, 2026 M4.2, 2023 M4.1, 1979 M4.1, 1977 M4.1, 1975 M4.1, 1988 M4.1, 1985 M4.1, 1984 M4.1, 1983 M4.1, 2000 M4.1, 1998 M4.1, 1997 M4.1, 1995 M4.1, 1995 M4.1, 2007 M4.1, 2006 M4.1, 2019 M4.1, 2024 M4.0, 1943 M4.0, 1977 M4.0, 1977 M4.0, 1975 M4.0, 1989 M4.0, 1987 M4.0, 1984 M4.0, 1980 M4.0, 1980 M4.0, 2002 M4.0, 2000 M4.0, 2000 M4.0, 1999 M4.0, 1998 M4.0, 1997 M4.0, 1996 M4.0, 1992 M4.0, 1992 M4.0, 2009 M4.0, 2009 M4.0, 2006 M4.0, 2005 M4.0, 2017 M4.0, 2017 M4.0, 2016 M4.0, 2016 M4.0, 2019 M3.9, 1979 M3.9, 1977 M3.9, 1975 M3.9, 1975 M3.9, 1975 M3.9, 1989 M3.9, 1986 M3.9, 1983 M3.9, 1999 M3.9, 1996 M3.9, 1995 M3.9, 1994 M3.9, 1993 M3.9, 2006 M3.9, 2017 M3.9, 2014 M3.9, 2014 M3.9, 2020 M3.9, 2025 M3.8, 1935 M3.8, 1979 M3.8, 1978 M3.8, 1976 M3.8, 1976 M3.8, 1975 M3.8, 1989 M3.8, 1985 M3.8, 1985 M3.8, 1984 M3.8, 1984 M3.8, 1980 M3.8, 2004 M3.8, 2001 M3.8, 2001 M3.8, 1998 M3.8, 1996 M3.8, 1996 M3.8, 1995 M3.8, 1992 M3.8, 1992 M3.8, 1992 M3.8, 2011 M3.8, 2006 M3.8, 2006 M3.8, 2005 M3.8, 2018 M3.8, 2017 M3.8, 2014 M3.8, 2025 M3.8, 2024 M3.8, 2023 M3.7, 1978 M3.7, 1977 M3.7, 1977 M3.7, 1977 M3.7, 1975 M3.7, 1974 M3.7, 1988 M3.7, 1987 M3.7, 1987 M3.7, 1983 M3.7, 2003 M3.7, 2000 M3.7, 1999 M3.7, 1998 M3.7, 1997 M3.7, 1997 M3.7, 1996 M3.7, 1995 M3.7, 1995 M3.7, 1991 M3.7, 1990 M3.7, 2011 M3.7, 2010 M3.7, 2009 M3.7, 2007 M3.7, 2018 M3.7, 2017 M3.7, 2017 M3.7, 2016 M3.7, 2016 M3.7, 2014 M3.7, 2022 M3.7, 2019 M3.7, 2019 M3.7, 2026 M3.7, 2026 M3.7, 2025 M3.6, 1979 M3.6, 1978 M3.6, 1989 M3.6, 1989 M3.6, 1989 M3.6, 1987 M3.6, 1987 M3.6, 1986 M3.6, 1986 M3.6, 1985 M3.6, 1984 M3.6, 1982 M3.6, 1982 M3.6, 1980 M3.6, 2003 M3.6, 2002 M3.6, 2001 M3.6, 1999 M3.6, 1998 M3.6, 1997 M3.6, 1997 M3.6, 1996 M3.6, 1994 M3.6, 1993 M3.6, 1991 M3.6, 1991 M3.6, 1990 M3.6, 2010 M3.6, 2009 M3.6, 2009 M3.6, 2008 M3.6, 2005 M3.6, 2005 M3.6, 2005 M3.6, 2018 M3.6, 2018 M3.6, 2017 M3.6, 2017 M3.6, 2017 M3.6, 2017 M3.6, 2014 M3.6, 2014 M3.6, 2021 M3.6, 2019 M3.6, 2025 M3.5, 1979 M3.5, 1979 M3.5, 1978 M3.5, 1978 M3.5, 1978 M3.5, 1977 M3.5, 1976 M3.5, 1976 M3.5, 1976 M3.5, 1975 M3.5, 1988 M3.5, 1987 M3.5, 1987 M3.5, 1986 M3.5, 1986 M3.5, 1985 M3.5, 1985 M3.5, 1985 M3.5, 1985 M3.5, 1984 M3.5, 1984 M3.5, 1984 M3.5, 1983 M3.5, 1983 M3.5, 2004 M3.5, 2004 M3.5, 2003 M3.5, 2000 M3.5, 1999 M3.5, 1999 M3.5, 1993 M3.5, 1991 M3.5, 1991 M3.5, 2012 M3.5, 2011 M3.5, 2008 M3.5, 2006 M3.5, 2006 M3.5, 2005 M3.5, 2005 M3.5, 2005 M3.5, 2005 M3.5, 2005 M3.5, 2005 M3.5, 2018 M3.5, 2017 M3.5, 2017 M3.5, 2017 M3.5, 2017 M3.5, 2015 M3.5, 2014 M3.5, 2014 M3.5, 2024 M3.5, 2023 M1.1 19 km SW of Wye, Montana M0.5 22 km ENE of West Yellowstone, Montana Earthquakes in Montana this week All U.S. only M2.5+ M4.5+
Biggest earthquakes in Montana since 1900 Mag Where Date Depth 7.2 Hebgen Lake, Montana Aug 18, 1959 12 km 6.6 Clarkston Valley, Montana Jun 28, 1925 0 km 6.4 Clarkston Valley, Montana (Aftershock) Jun 28, 1925 0 km 6.1 The 1935 Helena, Montana Earthquakes (Mainshock) Oct 19, 1935 15 km 6.1 30 km SSW of Big Sky, Montana Nov 23, 1947 15 km 6.0 16 km N of West Yellowstone, Montana Aug 18, 1959 10 km 6.0 47 km WNW of West Yellowstone, Montana Aug 19, 1959 15 km 5.9 2 km ENE of Helena, Montana Oct 12, 1935 5 km 5.9 The 1935 Helena, Montana Earthquakes (Largest Aftershock) Oct 31, 1935 10 km 5.8 11 km SE of Lincoln, Montana Jul 6, 2017 12 km 5.6 16 km N of Dillon, Montana Jul 26, 2005 13 km 5.5 Clarkston Valley, Montana (Aftershock) Jun 28, 1925 0 km
Quakes of magnitude 3.5+ by decade 1 00s
1 10s
8 20s
5 30s
2 40s
9 50s
11 60s
49 70s
55 80s
49 90s
49 00s
51 10s
16 20s
Older decades look quieter partly because there were far fewer seismometers. Counts before about 1970 are incomplete.
Good to know When was the last earthquake in Montana? The most recent one we have is a magnitude 0.5, 22 km ENE of West Yellowstone, Montana, on November 12. The list above updates every few minutes.
What was the biggest earthquake in Montana? A magnitude 7.2 near Hebgen Lake, Montana on August 18, 1959, the largest in the USGS catalog for the state since 1900.
Does Montana get earthquakes? Montana is one of the most earthquake-active places in the country. The USGS catalog holds 306 quakes of magnitude 3.5 or more here since 1900, including 26 of magnitude 5 or more. The USGS national hazard map is the best guide to the chance of strong shaking where you live.
Other states Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming History: USGS earthquake catalog, magnitude 3.5 and up since 1900, matched to the state by location (quakes just offshore count for the nearest state). Live: USGS real-time feeds.