QuakeIndex

Earthquakes in Iowa

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The most recent earthquake of M2.5 or more in Iowa was M 2.5, 10 km WNW of Marysville, Iowa, at 12:43 pm CDT on 25 June 2025.

No earthquake of M1.5 or more was recorded in Iowa in the last 24 hours.

Last 24 hours
0
Last 7 days
0
Last 30 days
0 · since 2016, about one every 3 years
Last 12 months
0
Since 2016
4 earthquakes of M1.5 or more
Largest since 2016
M 3.3 on 25 June 2025, 8 km SE of Knoxville, Iowa

Latest quake, 24 hours and 7 days: the QuakeIndex database, which reads USGS every 30 seconds, read at ; 30 days and 12 months: the QuakeIndex catalogue, counted to · earthquakes of M1.5 or more in Iowa, where USGS names the state in the location

Earthquakes are rare here

4 earthquakes of M1.5 or larger have been recorded in Iowa in 10 years, and most weeks have none. There have been none in the last 7 days.

With so few, a QuakeIndex score — this week as a percentile of Iowa's own weeks — would only say whether anything happened at all, so none is shown. That is a statement about Iowa, not about our data.

USGS catalogue · updated

If you felt one

QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.

The last 30 days

Oct 14 Oct 29 Nov 12
Each mark is a day's largest quake within range; its size is the magnitude. Too few days here have any earthquake at all to draw a normal range.

Show these earthquakes on your own site: a free card with this strip and the latest quakes in Iowa, for a local news site, school or neighborhood page.

Live · last 7 days

Latest earthquakes in Iowa

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

Source USGS · snapshot of

The last 7 days on the map

The map loads when it scrolls into view.
Every earthquake in Iowa in the last 7 days, from the USGS feed. Colour and size are magnitude; tap one for its page.

Open the full map — zoom anywhere, or find your own location →

Largest on record in and around Iowa

MagnitudeWhenWhere
M 3.3 8 km SE of Knoxville, Iowa
M 3.0 5 km S of Knoxville, Iowa
M 2.7 4 km E of Rembrandt, Iowa
M 2.5 10 km WNW of Marysville, Iowa

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

Before 2016: the largest in Iowa since 1900

The USGS record from 1900 to 2015 lists no earthquake of M5 or more in Iowa.

USGS ComCat, M5+ from 1900 to 2015, each epicentre counted for the state whose nearest county it is. Epicentres of early earthquakes are estimates. This is the record, not a forecast.

Counties in Iowa

Be ready

Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.