Earthquake · reviewed by a seismologist
M 1.8md
Earthquake near Farmington, MO
No earthquake was likely felt in Farmington in the 24 hours to 10:44 am CST (16:44 UTC). The last one was M 2.0, 23 km (14 mi) E, at 11:25 pm CDT on 29 June 2026, estimated intensity II (weak) in town. Every earthquake near Farmington
This page: a magnitude 1.8 earthquake was recorded 10 km (6 mi) north-northeast of Farmington, MO, at 9:51 pm CDT on 15 July 2018 (02:51 UTC), 3.3 km deep.
USGS: 9 km ENE of Leadington, Missouri
86 km (54 mi) S of St. Louis, MO
- When
- 9:51 pm CDT on 15 July 2018 ()
- Where
- 10 km (6 mi) north-northeast of Farmington, MO · earthquakes near Farmington
- Missouri today
- every earthquake in Missouri in the last 24 hours
- Magnitude
- M 1.8 (md)
- Depth
- 3.3 km below the surface
- Felt
- no reports yet
- Nearest
- St. Francois County, 10 km SW
- Nearest mapped fault
- St. Louis-Cape Girardeau liquefaction features, 3 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 3041 days ago
Earthquake alerts for Farmington, MO
Get a notification in this browser when USGS records an earthquake near Farmington, 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 17 km (11 mi) from the epicentre. In Farmington, 10 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: Esther, Flat River, Park Hills, Desloge, Elvins, Bonne Terre.
How big was it?
This earthquake released about 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
- Magna, Utah 2020 M 5.7 680,000× the energy of this one
- Around the size people start to feel M 3.0 61× the energy of this one
- This earthquake M 1.8 about 16 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 · 31 km NNE 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 37.8677, -90.3885. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| St. Francois County, MO | 10 km (6 mi) | SW | earthquakes near St. Francois County |
| Ste. Genevieve County, MO | 20 km (12 mi) | E | earthquakes near Ste. Genevieve County |
| Iron County, MO | 38 km (24 mi) | SW | earthquakes near Iron County |
| Madison County, MO | 44 km (27 mi) | S | earthquakes near Madison County |
| Washington County, MO | 45 km (28 mi) | W | earthquakes near Washington County |
| Jefferson County, MO | 45 km (28 mi) | NNW | earthquakes near Jefferson County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
18 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
- 2.1 4 km N of Marquand, 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
- 1.9 5 km NW of Weingarten, Missouri
- 2.2 4 km E of Bonne Terre, Missouri
- 2.2 5 km NNE of Terre du Lac, Missouri
- 1.9 5 km W of Terre du Lac, Missouri
- 2.1 7 km SSW of Olympian Village, Missouri
- 2.2 2 km SE of De Soto, Missouri
- 2.3 7 km SSW of Olympian Village, 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.