QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

35 km S of Skwentna, Alaska

· 103 km deep · released about 60 lb of TNT

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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 2.2 (ml)
Depth
103 km below the surface
Felt
no reports yet
Nearest
Matanuska-Susitna Borough, 124 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1151 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 61.6734, -151.5138. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Matanuska-Susitna Borough, AK 124 km (77 mi) WSW of here earthquakes near Matanuska-Susitna Borough
Anchorage Municipality, AK 131 km (81 mi) WNW of here earthquakes near Anchorage Municipality

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

Aftershocks so far

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

  1. 2.9 36 km SW of Skwentna, Alaska
  2. 1.6 34 km WSW of Skwentna, Alaska
  3. 1.6 52 km NW of Beluga, Alaska
  4. 1.6 39 km NW of Beluga, Alaska
  5. 1.5 22 km ESE of Skwentna, Alaska
  6. 1.6 26 km S of Skwentna, Alaska
  7. 2.4 40 km SW of Skwentna, Alaska
  8. 1.7 36 km SW of Skwentna, Alaska
  9. 1.7 31 km NW of Beluga, Alaska
  10. 1.6 47 km NW of Beluga, Alaska
  11. 1.9 47 km SW of Skwentna, Alaska
  12. 1.5 36 km W of Susitna, Alaska
  13. 1.6 32 km W of Susitna, Alaska
  14. 1.5 27 km WNW of Skwentna, Alaska
  15. 1.5 37 km WSW of Skwentna, Alaska

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.