QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

6 km E of Weare, New Hampshire

· 5.0 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hillsborough County 21 kmMerrimack County 24 kmRockingham County 46 kmBelknap County 51 kmCheshire County 52 kmStrafford County 55 kmSullivan County 55 kmMiddlesex County 71 kmEssex County 81 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 1.9 (ml)
Depth
5.0 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Hillsborough County, 21 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2318 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 43.0885, -71.6507. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hillsborough County, NH 21 km (13 mi) NNE of here earthquakes near Hillsborough County
Merrimack County, NH 24 km (15 mi) S of here earthquakes near Merrimack County
Rockingham County, NH 46 km (29 mi) WNW of here earthquakes near Rockingham County
Belknap County, NH 51 km (32 mi) SSW of here earthquakes near Belknap County
Cheshire County, NH 52 km (32 mi) ENE of here earthquakes near Cheshire County
Strafford County, NH 55 km (34 mi) WSW of here earthquakes near Strafford County

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

Aftershocks so far

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

  1. 1.5 2 km S of Bedford, New Hampshire
  2. 2.1 2 km NNW of Milford, New Hampshire
  3. 1.9 2 km N of Webster, New Hampshire
  4. 1.9 4 km ESE of Northfield, New Hampshire
  5. 1.5 5 km SSE of Boscawen, New Hampshire
  6. 2.0 5 km S of Alton, New Hampshire
  7. 1.6 2 km S of Henniker, New Hampshire
  8. 1.7 3 km SW of Townsend, Massachusetts
  9. 2.0 2 km WNW of Loudon, New Hampshire
  10. 2.7 5 km SW of Chichester, New Hampshire
  11. 2.2 1 km W of Andover, New Hampshire
  12. 2.1 4 km SE of Warner, New Hampshire
  13. 1.9 0 km SW of Bow Bog, New Hampshire
  14. 1.9 5 km SW of New Durham, New Hampshire
  15. 2.3 3 km NNE of Antrim, 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.