Earthquake · reviewed by a seismologist
M 1.7md
Missouri-Arkansas border region
Yes. A magnitude 1.7 earthquake was recorded in the Missouri-Arkansas border region, at 6:39 pm CDT on 26 June 2022 (23:39 UTC), 13 km deep.
- When
- Magnitude
- M 1.7 (md)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- Lawrence County, 20 km SSE
- Nearest mapped fault
- Western Lowlands liquefaction features, 20 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1598 days ago
Earthquake alerts for Pocahontas, AR
Get a notification in this browser when USGS records an earthquake near Pocahontas, AR. 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 it was probably too small to be felt, even directly above it. 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.
Earthquakes near other towns within 30 km: Pocahontas, Hoxie, Walnut Ridge.
How big was it?
This earthquake released about 10 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 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 95× the energy of this one
- This earthquake M 1.7 about 10 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 36.1975, -91.2000. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lawrence County, AR | 20 km (12 mi) | SSE | earthquakes near Lawrence County |
| Randolph County, AR | 22 km (14 mi) | NE | earthquakes near Randolph County |
| Sharp County, AR | 24 km (15 mi) | W | earthquakes near Sharp County |
| Oregon County, MO | 57 km (36 mi) | NNW | earthquakes near Oregon County |
| Greene County, AR | 58 km (36 mi) | E | earthquakes near Greene County |
| Ripley County, MO | 58 km (36 mi) | NNE | earthquakes near Ripley 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.
- 1.8 5 km SSW of Strawberry, Arkansas
- 2.1 5 km SSW of Strawberry, Arkansas
- 1.8 9 km SSW of Williford, Arkansas
- 2.2 8 km SW of Williford, Arkansas
- 1.8 8 km SW of Williford, Arkansas
- 1.9 12 km SSW of Strawberry, Arkansas
- 1.8 3 km WNW of Lynn, Arkansas
- 2.1 6 km SSW of Strawberry, Arkansas
- 2.1 5 km N of Strawberry, Arkansas
- 2.1 5 km NW of Sidney, Arkansas
- 1.7 2 km WNW of Lynn, Arkansas
- 2.3 11 km NW of Strawberry, Arkansas
- 1.6 1 km W of Lynn, Arkansas
- 2.3 5 km SE of Imboden, Arkansas
- 2.0 6 km N of Black Rock, Arkansas
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.