QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

5 km NE of Wolfeboro, New Hampshire

· 1.3 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Belknap County 25 kmCarroll County 28 kmStrafford County 37 kmYork County 44 kmMerrimack County 55 kmGrafton County 65 kmCumberland County 69 kmRockingham County 70 kmSullivan County 91 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
1.3 km below the surface
Felt
56 reports · strongest reported intensity V
Nearest
Belknap County, 25 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 608 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 56 people have reported feeling it to USGS.

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 43.6151, -71.1512. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Belknap County, NH 25 km (15 mi) ENE of here earthquakes near Belknap County
Carroll County, NH 28 km (18 mi) S of here earthquakes near Carroll County
Strafford County, NH 37 km (23 mi) NNW of here earthquakes near Strafford County
York County, ME 44 km (27 mi) WNW of here earthquakes near York County
Merrimack County, NH 55 km (34 mi) NE of here earthquakes near Merrimack County
Grafton County, NH 65 km (41 mi) ESE of here earthquakes near Grafton County

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

Aftershocks so far

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

  1. 1.6 2 km SW of Center Sandwich, New Hampshire
  2. 1.9 4 km ESE of Northfield, New Hampshire
  3. 1.9 8 km ENE of Lake Arrowhead, Maine
  4. 1.5 6 km SE of New Hampton, New Hampshire
  5. 2.0 5 km S of Alton, New Hampshire
  6. 2.2 4 km NW of Gilford, New Hampshire
  7. 1.9 3 km WSW of Dayton, Maine
  8. 2.0 2 km WNW of Loudon, New Hampshire
  9. 1.5 6 km SE of Newfield, Maine
  10. 1.8 3 km SW of Center Sandwich, New Hampshire
  11. 2.9 4 km SW of Center Sandwich, New Hampshire
  12. 1.9 5 km SW of New Durham, New Hampshire
  13. 2.3 5 km NW of Laconia, 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.