QuakeIndex

Earthquakes in Maryland

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Too few earthquakes here to say what is "normal"

Only 57 earthquakes of M1.5 or largerhave been recorded in Maryland in the 10 years of record we hold, and most weeks have none. A QuakeIndex score is a percentile against this place's own weeks — and when almost every week is empty, that number would just be reporting whether anything happened at all, dressed up as a percentile. So we do not publish one.

This is a statement about Maryland, not about our data: it is a quiet place. There have been none of M1.5 or larger in the last 7 days.

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. There is not yet enough history here to draw a normal range.

Live · last 7 days

Latest earthquakes in Maryland

None in Maryland 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 39.097, -76.989 — 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 Maryland

MagnitudeWhenWhere
M 4.1 3 km NNE of Little Creek, Delaware
M 3.0 3 km NE of Ranson, West Virginia
M 2.8 5 km ESE of East Berlin, Pennsylvania
M 2.8 1 km NNE of Wyndham, Virginia
M 2.7 10 km S of Louisa, Virginia
M 2.6 6 km ENE of Goochland, Virginia
M 2.6 29 km E of Greenbackville, Virginia
M 2.6 2 km SE of Woodlawn, Maryland

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

Counties in Maryland

After an earthquake here