QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

10 km NNW of Livermore, New Hampshire

· 5.0 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carroll County 37 kmGrafton County 42 kmCoos County 56 kmCaledonia County 64 kmOxford County 66 kmEssex County 67 kmBelknap County 72 kmOrange County 77 kmWashington County 95 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 2.3 (mb_lg)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Carroll County, 37 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2488 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 44.1622, -71.4261. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carroll County, NH 37 km (23 mi) NNW of here earthquakes near Carroll County
Grafton County, NH 42 km (26 mi) NE of here earthquakes near Grafton County
Coos County, NH 56 km (35 mi) SSW of here earthquakes near Coos County
Caledonia County, VT 64 km (40 mi) ESE of here earthquakes near Caledonia County
Oxford County, ME 66 km (41 mi) WSW of here earthquakes near Oxford County
Essex County, VT 67 km (42 mi) SSE of here earthquakes near Essex County

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

Aftershocks so far

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

  1. 1.6 2 km SW of Center Sandwich, New Hampshire
  2. 1.8 3 km SW of Center Sandwich, New Hampshire
  3. 2.9 4 km SW of Center Sandwich, New Hampshire
  4. 1.5 4 km WSW of North Woodstock, New Hampshire
  5. 1.7 5 km SSE of Lisbon, New Hampshire
  6. 1.9 0 km NNE of Gorham, New Hampshire
  7. 2.9 0 km SSW of Gorham, New Hampshire
  8. 2.0 5 km SW of Albany, New Hampshire
  9. 2.0 3 km ENE of Sandwich, New Hampshire
  10. 1.6 1 km SW of Sandwich, New Hampshire
  11. 1.5 2 km N of Livermore, New Hampshire
  12. 1.9 5 km WNW of Albany, New Hampshire

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.