QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

34 km SE of York Beach, Maine

· 10 km deep · released about 43 lb of TNT

10 km30 km60 km120 km N York County 59 kmEssex County 60 kmRockingham County 66 kmStrafford County 70 kmSuffolk County 93 kmCumberland County 93 kmMiddlesex County 106 kmBelknap County 110 kmSagadahoc County 111 km
Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.1 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
York County, 59 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 229 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 42.9749, -70.2856. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
York County, ME 59 km (37 mi) SSE of here earthquakes near York County
Essex County, MA 60 km (37 mi) NE of here earthquakes near Essex County
Rockingham County, NH 66 km (41 mi) E of here earthquakes near Rockingham County
Strafford County, NH 70 km (44 mi) ESE of here earthquakes near Strafford County
Suffolk County, MA 93 km (58 mi) NE of here earthquakes near Suffolk County
Cumberland County, ME 93 km (58 mi) S of here earthquakes near Cumberland County

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

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

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.