QuakeIndex

Earthquakes in Montana

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Quiet QuakeIndex 0 / 100

0 quakes of M1.5 or larger in the last 7 days in Montana. Normal for here is 8 to 16 in a week.

Compared against Montana's own 10 years · USGS catalogue · updated

The last 30 days

Aug 29 Sep 13 Sep 27
Each mark is a day's largest quake within range; its size is the magnitude. The shaded band is the magnitude a day's largest quake normally falls in here (M1.8–M2.6), from this place's own 10-year record. A mark above the band is a bigger day than usual.

Live · last 7 days

Latest earthquakes in Montana

None in Montana in the latest snapshot we hold; the full 7 days load from USGS as this page opens.

Source USGS · snapshot of

Where this is

Centre 47.138, -110.910 — the mean of this state’s place centroids, from the US Census Bureau Gazetteer (2024). Activity is measured across a rectangle drawn around the state, so a few earthquakes just over its border are counted too.

Largest on record in and around Montana

MagnitudeWhenWhere
M 5.8 11 km SE of Lincoln, Montana
M 5.0 15 km S of Lincoln, Montana
M 4.6 9 km NE of Lima, Montana
M 4.4 39 km NNW of Stanley, Idaho
M 4.4 14 km SE of Lincoln, Montana
M 4.4 12 km E of Hebgen Lake Estates, Montana
M 4.3 45 km W of Hebgen Lake Estates, Montana
M 4.3 19 km E of Lincoln, Montana

From the QuakeIndex catalogue, built from the USGS FDSN event service · inside a rectangle drawn around Montana, which takes in some ground over its borders.

Counties in Montana

After an earthquake here