QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4mwr

22 km NW of Saint John, Canada

· 5.0 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 113 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 3.4 (mwr)
Depth
5.0 km below the surface
Felt
45 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Washington County, 113 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2735 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 45 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× more

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 45.3837, -66.2921. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washington County, ME 113 km (70 mi) ENE of here earthquakes near Washington County

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

Aftershocks so far

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

  1. 1.5 20 km ENE of Saint Andrews, Canada
  2. 1.9 13 km W of Hampton, Canada
  3. 1.6 11 km WNW of Saint John, Canada
  4. 2.3 11 km SSE of Wells, Canada
  5. 2.1 19 km NNW of Hampton, Canada
  6. 1.6 26 km NW of Saint John, Canada
  7. 1.8 24 km ENE of Saint Andrews, Canada
  8. 1.7 34 km SSE of Oromocto, Canada
  9. 1.7 37 km ENE of Saint Andrews, Canada
  10. 1.7 29 km S of Oromocto, Canada
  11. 2.0 25 km WNW of Wells, Canada
  12. 2.2 30 km SSW of Oromocto, Canada
  13. 1.5 39 km NE of Saint Andrews, Canada
  14. 2.1 12 km SSE of Oromocto, Canada
  15. 2.1 10 km SE of Oromocto, Canada

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.