QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

4 km S of Dallas, Maine

· 6.5 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 11 kmOxford County 53 kmCoos County 67 kmSomerset County 77 kmKennebec County 86 kmAndroscoggin County 92 kmEssex County 97 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 2.5 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Franklin County, 11 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3776 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 44.9567, -70.5526. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Franklin County, ME 11 km (7 mi) WSW of here earthquakes near Franklin County
Oxford County, ME 53 km (33 mi) NNE of here earthquakes near Oxford County
Coos County, NH 67 km (42 mi) ENE of here earthquakes near Coos County
Somerset County, ME 77 km (48 mi) SW of here earthquakes near Somerset County
Kennebec County, ME 86 km (54 mi) NW of here earthquakes near Kennebec County
Androscoggin County, ME 92 km (57 mi) NNW of here earthquakes near Androscoggin County

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

Aftershocks so far

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

  1. 1.9 7 km ESE of Eustis, Maine
  2. 2.1 6 km N of Upton, Maine
  3. 1.7 5 km NNW of Dallas, Maine
  4. 1.7 4 km S of Carthage, Maine
  5. 2.0 7 km WNW of Andover, Maine
  6. 1.5 33 km SSW of Lac-Mégantic, Canada
  7. 2.2 21 km WNW of Eustis, Maine
  8. 1.5 16 km E of Eustis, Maine
  9. 1.8 18 km NNW of Kingfield, Maine
  10. 1.6 6 km ESE of Dallas, Maine
  11. 2.3 22 km NW of Rangeley, Maine
  12. 1.6 23 km WNW of Rangeley, Maine
  13. 1.6 8 km ENE of Byron, Maine
  14. 1.9 3 km SW of Dallas, Maine

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.