QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1mb_lg

6 km W of Cape Neddick, Maine

· 5.0 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N York County 26 kmStrafford County 29 kmRockingham County 39 kmEssex County 63 kmBelknap County 69 kmCumberland County 75 kmMerrimack County 80 kmCarroll County 85 kmHillsborough County 88 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 2.1 (mb_lg)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
York County, 26 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2915 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

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 43.1934, -70.7048. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
York County, ME 26 km (16 mi) S of here earthquakes near York County
Strafford County, NH 29 km (18 mi) ESE of here earthquakes near Strafford County
Rockingham County, NH 39 km (24 mi) NE of here earthquakes near Rockingham County
Essex County, MA 63 km (39 mi) NNE of here earthquakes near Essex County
Belknap County, NH 69 km (43 mi) ESE of here earthquakes near Belknap County
Cumberland County, ME 75 km (46 mi) SSW of here earthquakes near Cumberland County

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

Aftershocks so far

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

  1. 1.7 2 km NE of Danville, New Hampshire
  2. 2.1 34 km SE of York Beach, Maine
  3. 1.6 3 km SSE of Greenland, New Hampshire
  4. 2.0 5 km S of Alton, New Hampshire
  5. 2.0 13 km SE of York Harbor, Maine
  6. 2.0 10 km SE of York Harbor, Maine
  7. 3.8 9 km SE of York Harbor, Maine
  8. 1.9 3 km WSW of Dayton, Maine
  9. 1.5 6 km SE of Newfield, Maine
  10. 1.9 5 km SW of New Durham, New Hampshire
  11. 2.0 1 km ESE of Springvale, Maine
  12. 2.0 2 km W of Springvale, Maine
  13. 2.0 15 km N of Rockport, Massachusetts
  14. 1.7 5 km S of Rochester, New Hampshire
  15. 2.4 29 km ESE of York Beach, 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.