Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Nixon, TX
Yes: an earthquake was likely felt in Nixon in the last 24 hours. M 3.1, 122 km (76 mi) WSW of Nixon, at 3:20 am CST on 12 November 2026 (09:20 UTC); the estimated shaking in Nixon was intensity II (weak). Every earthquake near Nixon
This page: a magnitude 1.6 earthquake was recorded 18 km (11 mi) south-southeast of Nixon, TX, at 8:02 am CDT on 22 July 2021 (13:02 UTC), 7.1 km deep.
USGS: 18 km SSE of Nixon, Texas
88 km (55 mi) ESE of San Antonio, TX
- When
- 8:02 am CDT on 22 July 2021 ()
- Where
- 18 km (11 mi) south-southeast of Nixon, TX · earthquakes near Nixon
- Texas today
- every earthquake in Texas in the last 24 hours
- Magnitude
- M 1.6 (ml)
- Depth
- 7.1 km below the surface
- Felt
- no reports yet
- Nearest
- Karnes County, 26 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 498 days ago
Earthquake alerts for Nixon, TX
Get a notification in this browser when USGS records an earthquake near Nixon, 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 3 km (2 mi) from the epicentre. In Nixon, 18 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: Yorktown, Runge, Stockdale.
How big was it?
This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.6 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
The largest earthquake within 50 km since 2016 was M 4.0 on 2018-05-01 — about 4,000 times the energy of this one.
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 29.1100, -97.7150. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Karnes County, TX | 26 km (16 mi) | SSW | earthquakes near Karnes County |
| DeWitt County, TX | 34 km (21 mi) | E | earthquakes near DeWitt County |
| Wilson County, TX | 37 km (23 mi) | W | earthquakes near Wilson County |
| Gonzales County, TX | 45 km (28 mi) | NNE | earthquakes near Gonzales County |
| Goliad County, TX | 57 km (35 mi) | SSE | earthquakes near Goliad County |
| Guadalupe County, TX | 57 km (36 mi) | NNW | earthquakes near Guadalupe County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
44 earthquakes have been recorded within 50 km since this one.
- 1.7 7 km NNW of Nordheim, Texas
- 1.7 7 km N of Nordheim, Texas
- 1.7 6 km NNE of Nordheim, Texas
- 1.6 4 km NNW of Yorktown, Texas
- 2.3 8 km NNW of Yorktown, Texas
- 1.7 16 km SSE of Nixon, Texas
- 1.6 11 km N of Nordheim, Texas
- 1.8 8 km N of Nordheim, Texas
- 1.6 8 km N of Nordheim, Texas
- 1.6 6 km N of Nordheim, Texas
- 1.8 7 km N of Nordheim, Texas
- 1.5 6 km N of Nordheim, Texas
- 1.5 9 km N of Nordheim, Texas
- 1.5 8 km N of Nordheim, Texas
- 1.5 9 km N of Nordheim, 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.