Earthquake · reviewed by a seismologist
M 1.5ml
0 km SSW of Newcastle, Oklahoma
- When
- Magnitude
- M 1.5 (ml)
- Depth
- 5.4 km below the surface
- Felt
- 8 reports · strongest reported intensity III
- Nearest
- Cleveland County, 26 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 27 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.
How big was it?
This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
- Around the size people start to feel M 3.0 170× the energy of this one
- This earthquake M 1.5 about 5.6 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 35.2415, -97.6023. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Cleveland County, OK | 26 km (16 mi) | W of here | earthquakes near Cleveland County |
| McClain County, OK | 29 km (18 mi) | NNW of here | earthquakes near McClain County |
| Grady County, OK | 36 km (22 mi) | NE of here | earthquakes near Grady County |
| Oklahoma County, OK | 39 km (24 mi) | SSW of here | earthquakes near Oklahoma County |
| Canadian County, OK | 48 km (30 mi) | SE of here | earthquakes near Canadian County |
| Pottawatomie County, OK | 59 km (36 mi) | W of here | earthquakes near Pottawatomie County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.3 5 km ESE of Chickasha, Oklahoma
- 0.9 5 km SE of Chickasha, Oklahoma
- 3.3 2 km SSW of Dibble, Oklahoma
- 1.6 1 km S of Dibble, Oklahoma
- 1.5 2 km SW of Dibble, Oklahoma
- 2.0 1 km SW of Dibble, 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.