QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

1 km W of Oakland, Pennsylvania

· 3.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lawrence County 4 kmMahoning County 32 kmBeaver County 34 kmMercer County 36 kmButler County 40 kmColumbiana County 41 kmTrumbull County 48 kmHancock County 55 kmAllegheny County 67 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.8 (ml)
Depth
3.0 km below the surface
Felt
no reports yet
Nearest
Lawrence County, 4 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3776 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.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. 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 40.9888, -80.3863. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lawrence County, PA 4 km (3 mi) W of here earthquakes near Lawrence County
Mahoning County, OH 32 km (20 mi) E of here earthquakes near Mahoning County
Beaver County, PA 34 km (21 mi) N of here earthquakes near Beaver County
Mercer County, PA 36 km (23 mi) SSW of here earthquakes near Mercer County
Butler County, PA 40 km (25 mi) WNW of here earthquakes near Butler County
Columbiana County, OH 41 km (25 mi) NE of here earthquakes near Columbiana County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

5 earthquakes have been recorded within 50 km since this one.

  1. 1.7 5 km ENE of Orangeville, Ohio
  2. 1.8 5 km NNE of Columbiana, Ohio
  3. 1.9 3 km NE of Bessemer, Pennsylvania
  4. 2.1 4 km NE of Bessemer, Pennsylvania
  5. 1.9 2 km ESE of Lowellville, Ohio

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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.