QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

239 km SW of Yakutat, Alaska

· 10 km deep · released about 240 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 2.6 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest mapped fault
Gulf of Alaska shear zone, 2 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 683 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 58.0555, -142.7100. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.3 212 km SW of Yakutat, Alaska
  2. 2.4 217 km SW of Yakutat, Alaska
  3. 2.8 269 km SW of Yakutat, Alaska
  4. 3.8 263 km SW of Yakutat, Alaska
  5. 2.5 249 km SW of Yakutat, Alaska
  6. 2.5 220 km SW of Yakutat, Alaska
  7. 2.6 241 km SW of Yakutat, Alaska
  8. 2.8 210 km SW of Yakutat, Alaska
  9. 2.1 228 km SW of Yakutat, Alaska
  10. 2.0 227 km SW of Yakutat, Alaska
  11. 2.5 260 km SW of Yakutat, Alaska
  12. 2.2 214 km SW of Yakutat, Alaska
  13. 1.8 235 km SW of Yakutat, Alaska
  14. 2.5 266 km SW of Yakutat, Alaska
  15. 2.0 249 km SW 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 4.2 on 2022-02-03 — it released about 250 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.