Earthquake · reviewed by a seismologist
M 1.8ml
5 km ESE of Velma, Oklahoma
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 5.0 km below the surface
- Felt
- no reports yet
- Nearest
- Stephens County, 22 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 38 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 13 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 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 810,000× the energy of this one
- Around the size people start to feel M 3.0 72× the energy of this one
- This earthquake M 1.8 about 13 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 34.4463, -97.6158. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Stephens County, OK | 22 km (14 mi) | E of here | earthquakes near Stephens County |
| Carter County, OK | 37 km (23 mi) | NW of here | earthquakes near Carter County |
| Garvin County, OK | 40 km (25 mi) | SW of here | earthquakes near Garvin County |
| Jefferson County, OK | 43 km (27 mi) | NNE of here | earthquakes near Jefferson County |
| Murray County, OK | 50 km (31 mi) | W of here | earthquakes near Murray County |
| Love County, OK | 64 km (40 mi) | NNW of here | earthquakes near Love 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.
- 1.2 11 km SE of Katie, Oklahoma
- 1.5 8 km W of Davis, Oklahoma
- 1.5 11 km W of Davis, Oklahoma
- 1.9 4 km SE of Ratliff City, Oklahoma
- 2.0 8 km ESE of Loco, Oklahoma
- 1.9 8 km SE of Loco, Oklahoma
- 1.7 2 km SE of Ratliff City, Oklahoma
- 1.6 5 km ESE of Velma, Oklahoma
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.