QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

5 km W of Terre du Lac, Missouri

· 6.0 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 19 kmSt. Francois County 22 kmIron County 32 kmJefferson County 40 kmSte. Genevieve County 46 kmCrawford County 56 kmMadison County 57 kmMonroe County 60 kmFranklin County 65 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.9 (md)
Depth
6.0 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Washington County, 19 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1506 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 37.9113, -90.6835. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washington County, MO 19 km (12 mi) E of here earthquakes near Washington County
St. Francois County, MO 22 km (13 mi) WNW of here earthquakes near St. Francois County
Iron County, MO 32 km (20 mi) N of here earthquakes near Iron County
Jefferson County, MO 40 km (25 mi) SSW of here earthquakes near Jefferson County
Ste. Genevieve County, MO 46 km (29 mi) W of here earthquakes near Ste. Genevieve County
Crawford County, MO 56 km (35 mi) E of here earthquakes near Crawford County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

7 earthquakes have been recorded within 50 km since this one.

  1. 2.0 14 km SSE of Weingarten, Missouri
  2. 2.0 6 km SSW of Valmeyer, Illinois
  3. 1.7 3 km WNW of Olympian Village, Missouri
  4. 2.0 16 km WNW of Caledonia, Missouri
  5. 1.9 5 km NW of Weingarten, Missouri
  6. 2.2 4 km E of Bonne Terre, Missouri
  7. 2.2 5 km NNE of Terre du Lac, Missouri

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.