QuakeIndex

Earthquake · reviewed by a seismologist

M 3.8ml

115 km SE of McCarthy, Alaska

· 15 km deep · released about 7.6 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yakutat City and Borough 93 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 3.8 (ml)
Depth
15 km below the surface
Felt
no reports yet
Measured shaking
intensity V (ShakeMap)
Nearest
Yakutat City and Borough, 93 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2656 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 7.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.8 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 22,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 710× the energy of this one
  4. This earthquake M 3.8 about 7.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 16× 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 60.6491, -141.5117. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yakutat City and Borough, AK 93 km (57 mi) NW 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

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

  1. 1.5 140 km SSE of McCarthy, Alaska
  2. 2.0 127 km NW of Yakutat, Alaska
  3. 1.5 127 km NW of Yakutat, Alaska
  4. 4.0 128 km NW of Yakutat, Alaska
  5. 1.5 133 km NW of Yakutat, Alaska
  6. 2.8 127 km NW of Yakutat, Alaska
  7. 1.5 129 km NW of Yakutat, Alaska
  8. 1.8 120 km SSE of McCarthy, Alaska
  9. 1.7 135 km NW of Yakutat, Alaska
  10. 2.1 126 km NW of Yakutat, Alaska
  11. 1.6 136 km SSE of McCarthy, Alaska
  12. 1.8 121 km SSE of McCarthy, Alaska
  13. 1.5 128 km NW of Yakutat, AK
  14. 1.6 122 km NW of Yakutat, Alaska
  15. 1.5 121 km NW 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.

On USGS

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