QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

119 km ESE of Yakutat, Alaska

· 10 km deep · released about 5.4 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 1.5 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Hoonah-Angoon Census Area, 135 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1269 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 58.9865, -137.9435. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hoonah-Angoon Census Area, AK 135 km (84 mi) WNW of here earthquakes near Hoonah-Angoon Census Area

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

Aftershocks so far

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

  1. 1.6 83 km ESE of Yakutat, Alaska
  2. 1.9 89 km NW of Elfin Cove, Alaska
  3. 2.2 83 km ESE of Yakutat, Alaska
  4. 1.9 120 km NW of Elfin Cove, Alaska
  5. 1.6 80 km ESE of Yakutat, Alaska
  6. 2.2 83 km ESE of Yakutat, Alaska
  7. 1.6 84 km ESE of Yakutat, Alaska
  8. 1.6 101 km NW of Elfin Cove, Alaska
  9. 2.4 112 km WSW of Covenant Life, Alaska
  10. 1.7 95 km ESE of Yakutat, Alaska
  11. 2.0 105 km WNW of Elfin Cove, Alaska
  12. 1.7 108 km WSW of Covenant Life, Alaska
  13. 2.0 87 km NW of Elfin Cove, Alaska
  14. 1.6 113 km SE of Yakutat, Alaska
  15. 2.0 110 km ESE 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 4.3 on 2021-02-08 — it released about 16,000 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.