Earthquake · reviewed by a seismologist
M 2.2md
Earthquake near Terre du Lac, MO
No earthquake was likely felt in Terre du Lac in the 24 hours to 6:29 am CST (12:29 UTC). The last one was M 3.5, 244 km (151 mi) ENE, at 2:05 am CDT on 29 June 2026, estimated intensity II (weak) in town; 392 felt reports to USGS. Every earthquake near Terre du Lac
This page: a magnitude 2.2 earthquake was recorded 6 km (3 mi) north-northeast of Terre du Lac, MO, at 5:27 pm CDT on 22 August 2022 (22:27 UTC), 13 km deep. 7 people have reported feeling it to USGS.
USGS: 5 km NNE of Terre du Lac, Missouri
82 km (51 mi) SSW of St. Louis, MO
- When
- 5:27 pm CDT on 22 August 2022 ()
- Where
- 6 km (3 mi) north-northeast of Terre du Lac, MO · earthquakes near Terre du Lac
- Missouri today
- every earthquake in Missouri in the last 24 hours
- Magnitude
- M 2.2 (md)
- Depth
- 13 km below the surface
- Felt
- 7 reports · strongest reported intensity III
- Nearest
- St. Francois County, 20 km SE
- Nearest mapped fault
- St. Louis-Cape Girardeau liquefaction features, 4 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1471 days ago
Earthquake alerts for Terre du Lac, MO
Get a notification in this browser when USGS records an earthquake near Terre du Lac, MO. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 30 km (19 mi) from the epicentre. In Terre du Lac, 6 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: Bonne Terre, Leadwood, Desloge, Park Hills, Flat River, Elvins.
How big was it?
This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
- Magna, Utah 2020 M 5.7 170,000× the energy of this one
- Around the size people start to feel M 3.0 15× the energy of this one
- This earthquake M 2.2 about 62 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.
For this area
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.1 Southwestern Illinois · 39 km ENE of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 37.9598, -90.6082. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| St. Francois County, MO | 20 km (13 mi) | SE | earthquakes near St. Francois County |
| Washington County, MO | 25 km (16 mi) | W | earthquakes near Washington County |
| Jefferson County, MO | 34 km (21 mi) | N | earthquakes near Jefferson County |
| Iron County, MO | 38 km (24 mi) | SSW | earthquakes near Iron County |
| Ste. Genevieve County, MO | 40 km (25 mi) | ESE | earthquakes near Ste. Genevieve County |
| Monroe County, IL | 52 km (32 mi) | NE | earthquakes near Monroe County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
10 earthquakes have been recorded within 50 km since this one.
- 2.0 14 km SSE of Weingarten, Missouri
- 2.0 6 km SSW of Valmeyer, Illinois
- 2.2 15 km SW of Ozora, Missouri
- 1.7 3 km WNW of Olympian Village, Missouri
- 2.3 4 km S of Valmeyer, Illinois
- 2.4 8 km SW of Ozora, Missouri
- 2.3 4 km E of Herculaneum, Missouri
- 2.0 16 km WNW of Caledonia, Missouri
- 1.9 5 km NW of Weingarten, Missouri
- 2.2 4 km E of Bonne Terre, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.