QuakeIndex

Earthquakes in Colorado

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Quiet QuakeIndex 0 / 100

0 quakes of M1.5 or larger in the last 7 days in Colorado. Normal for here is 1 to 3 in a week.

Compared against Colorado'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 (M1.7–M2.5), 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 Colorado

None in Colorado 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 39.189, -105.301 — 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 Colorado

MagnitudeWhenWhere
M 4.5 29 km E of La Sal, Utah
M 4.3 28 km E of La Sal, Utah
M 4.3 6 km NNE of Segundo, Colorado
M 4.2 27 km N of Cimarron, New Mexico
M 4.1 18 km SSW of Weston, Colorado
M 4.1 Colorado
M 4.1 43 km NW of Parachute, Colorado
M 4.0 25 km N of Cimarron, New Mexico

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

Counties in Colorado

After an earthquake here