Earthquake · reviewed by a seismologist
M 1.7ml
12 km E of Pearsall, Texas
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 6.5 km below the surface
- Felt
- no reports yet
- Nearest
- Frio County, 14 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 28.8960, -98.9700. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Frio County, TX | 14 km (9 mi) | ENE of here | earthquakes near Frio County |
| Atascosa County, TX | 42 km (26 mi) | W of here | earthquakes near Atascosa County |
| Medina County, TX | 53 km (33 mi) | SSE of here | earthquakes near Medina County |
| La Salle County, TX | 62 km (38 mi) | NNE of here | earthquakes near La Salle County |
| McMullen County, TX | 68 km (43 mi) | NW of here | earthquakes near McMullen County |
| Bexar County, TX | 75 km (47 mi) | SW of here | earthquakes near Bexar County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 2.8 17 km W of Charlotte, Texas
- 2.6 14 km ESE of Pearsall, Texas
- 2.7 16 km ESE of Pearsall, Texas
- 1.6 5 km S of Pearsall, Texas
- 1.6 18 km ESE of Pearsall, Texas
- 1.9 11 km ESE of Pearsall, Texas
- 1.9 17 km ESE of Pearsall, Texas
- 2.2 17 km ESE of Pearsall, 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.