Earthquake · reviewed by a seismologist
M 1.6ml
4 km SSW of Groom, Texas
- When
- Magnitude
- M 1.6 (ml)
- Depth
- 2.9 km below the surface
- Felt
- no reports yet
- Nearest
- Armstrong County, 31 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 866 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
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.
Where
Epicentre 35.1630, -101.1180. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Armstrong County, TX | 31 km (19 mi) | NE of here | earthquakes near Armstrong County |
| Carson County, TX | 35 km (21 mi) | SE of here | earthquakes near Carson County |
| Donley County, TX | 36 km (22 mi) | NW of here | earthquakes near Donley County |
| Gray County, TX | 38 km (24 mi) | SW of here | earthquakes near Gray County |
| Briscoe County, TX | 71 km (44 mi) | N of here | earthquakes near Briscoe County |
| Randall County, TX | 74 km (46 mi) | ENE of here | earthquakes near Randall County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 2.8 13 km S of Claude, Texas
- 2.5 4 km E of Skellytown, Texas
- 1.9 20 km WSW of Panhandle, Texas
- 2.6 5 km NW of Pampa, Texas
- 1.7 6 km SSE of White Deer, 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.