Earthquake · reviewed by a seismologist
M 2.3ml
4 km N of Calvin, OK
Yes. A magnitude 2.3 earthquake was recorded 4 km N of Calvin, OK, at 2:36 am CDT on 26 June 2019 (07:36 UTC), 2.8 km deep. 1 person has reported feeling it to USGS.
- When
- Magnitude
- M 2.3 (ml)
- Depth
- 2.8 km below the surface
- Felt
- 1 report · strongest reported intensity III
- Nearest
- Hughes County, 5 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2695 days ago
Earthquake alerts for Holdenville, OK
Get a notification in this browser when USGS records an earthquake near Holdenville, OK. 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 38 km (24 mi) from the epicentre. 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.
Likely felt in: Holdenville 16 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
- Magna, Utah 2020 M 5.7 110,000× the energy of this one
- Around the size people start to feel M 3.0 10× the energy of this one
- This earthquake M 2.3 about 94 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 35.0067, -96.2473. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Hughes County, OK | 5 km (3 mi) | N | earthquakes near Hughes County |
| Seminole County, OK | 36 km (23 mi) | WNW | earthquakes near Seminole County |
| Pittsburg County, OK | 46 km (29 mi) | E | earthquakes near Pittsburg County |
| Coal County, OK | 47 km (29 mi) | S | earthquakes near Coal County |
| Pontotoc County, OK | 51 km (32 mi) | SW | earthquakes near Pontotoc County |
| Okfuskee County, OK | 52 km (32 mi) | N | earthquakes near Okfuskee County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
57 earthquakes have been recorded within 50 km since this one.
- 1.7 5 km NNE of Centrahoma, Oklahoma
- 2.0 5 km NE of Centrahoma, Oklahoma
- 1.6 6 km NNE of Centrahoma, Oklahoma
- 2.4 4 km NNE of Centrahoma, Oklahoma
- 1.9 4 km NNE of Centrahoma, Oklahoma
- 2.2 4 km NE of Centrahoma, Oklahoma
- 1.6 3 km N of Lamar, Oklahoma
- 2.5 4 km ESE of Lamar, Oklahoma
- 1.5 5 km N of Lamar, Oklahoma
- 2.0 5 km N of Lamar, Oklahoma
- 1.6 5 km N of Lamar, Oklahoma
- 2.0 5 km NNE of Lamar, Oklahoma
- 2.0 6 km N of Lamar, Oklahoma
- 1.7 7 km SE of Ada, Oklahoma
- 2.2 7 km S of Stuart, 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.