Earthquake · reviewed by a seismologist
M 2.1mb_lg
Earthquake near Farmers Branch, TX
No earthquake was likely felt in Farmers Branch in the 24 hours to 10:05 pm CST (04:05 UTC). The last one was M 5.0, 499 km (310 mi) NW, at 5:21 am CDT on 23 July 2026, estimated intensity III (weak) in town; 499 felt reports to USGS. Every earthquake near Farmers Branch
This page: a magnitude 2.1 earthquake was recorded 6 km (4 mi) south-southwest of Farmers Branch, TX, at 11:27 am CDT on 1 September 2017 (16:27 UTC), 4.2 km deep. 10 people have reported feeling it to USGS.
USGS: 5 km SSW of Farmers Branch, Texas
18 km (11 mi) WNW of Dallas, TX · in Irving, TX
- When
- 11:27 am CDT on 1 September 2017 ()
- Where
- 6 km (4 mi) south-southwest of Farmers Branch, TX · earthquakes near Farmers Branch
- Texas today
- every earthquake in Texas in the last 24 hours
- Magnitude
- M 2.1 (mb_lg)
- Depth
- 4.2 km below the surface
- Felt
- 10 reports · strongest reported intensity III
- Nearest
- Dallas County, 19 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3271 days ago
Earthquake alerts for Farmers Branch, TX
Get a notification in this browser when USGS records an earthquake near Farmers Branch, TX. 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 28 km (17 mi) from the epicentre. In Farmers Branch, 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: Irving, Carrollton, Coppell, Addison, Grapevine, Euless.
How big was it?
This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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 since 1900 lists no earthquake of M5 or more within 50 km.
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 32.8824, -96.9281. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Dallas County, TX | 19 km (12 mi) | SE | earthquakes near Dallas County |
| Tarrant County, TX | 36 km (22 mi) | WSW | earthquakes near Tarrant County |
| Denton County, TX | 40 km (25 mi) | NNW | earthquakes near Denton County |
| Collin County, TX | 48 km (30 mi) | NE | earthquakes near Collin County |
| Rockwall County, TX | 48 km (30 mi) | E | earthquakes near Rockwall County |
| Ellis County, TX | 61 km (38 mi) | SSE | earthquakes near Ellis County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
21 earthquakes have been recorded within 50 km since this one.
- 1.8 6 km SSE of Farmers Branch, Texas
- 2.2 5 km S of Farmers Branch, Texas
- 3.1 7 km SSW of Mansfield, Texas
- 3.2 7 km S of Mansfield, Texas
- 1.7 1 km N of Justin, Texas
- 2.0 4 km SSE of Haslet, Texas
- 2.3 1 km NW of Northlake, Texas
- 1.5 5 km NNE of Irving, Texas
- 2.3 7 km S of Mansfield, Texas
- 1.8 0 km S of Lake Dallas, Texas
- 2.3 6 km NNE of Irving, Texas
- 1.6 5 km SSW of Farmers Branch, Texas
- 1.8 7 km S of Mansfield, Texas
- 3.2 8 km SSW of Mansfield, Texas
- 2.5 4 km SSE of Rendon, Texas
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.