QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

127 km NE of Yakutat, Alaska

· 5.5 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
5.5 km below the surface
Felt
no reports yet
Nearest
Yakutat City and Borough, 128 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 702 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 60.4304, -138.2623. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yakutat City and Borough, AK 128 km (79 mi) ENE of here earthquakes near Yakutat City and Borough

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

Aftershocks so far

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

  1. 2.0 100 km ENE of Yakutat, Alaska
  2. 1.6 165 km NNE of Yakutat, Alaska
  3. 3.5 162 km NNE of Yakutat, Alaska
  4. 2.0 166 km NNE of Yakutat, Alaska
  5. 1.6 152 km W of Whitehorse, Canada
  6. 1.6 115 km NE of Yakutat, Alaska
  7. 1.5 107 km ENE of Yakutat, Alaska
  8. 2.3 116 km ENE of Yakutat, Alaska
  9. 2.7 114 km ENE of Yakutat, Alaska
  10. 1.5 115 km NE of Yakutat, Alaska
  11. 3.1 123 km NW of Mosquito Lake, Alaska
  12. 2.0 114 km WNW of Mosquito Lake, Alaska
  13. 1.9 155 km NNE of Yakutat, Alaska
  14. 1.9 98 km ENE of Yakutat, Alaska
  15. 1.8 121 km NNE of Yakutat, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2018-04-12 — it released about 710 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.