QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1mwr

157 km N of Yakutat, Alaska

· 10 km deep · released about 21 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yakutat City and Borough 106 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 4.1 (mwr)
Depth
10 km below the surface
Felt
2 reports · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Yakutat City and Borough, 106 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 753 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 7,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 350× the energy of this one
  3. Magna, Utah 2020 M 5.7 250× the energy of this one
  4. This earthquake M 4.1 about 21 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 45× 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 60.9529, -140.0200. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yakutat City and Borough, AK 106 km (66 mi) NNE 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

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

  1. 3.5 122 km N of Yakutat, Alaska
  2. 4.4 111 km N of Yakutat, Alaska
  3. 4.2 116 km NNW of Yakutat, Alaska
  4. 3.6 112 km N of Yakutat, Alaska
  5. 4.4 112 km N of Yakutat, Alaska
  6. 4.1 112 km N of Yakutat, Alaska
  7. 4.0 118 km N of Yakutat, Alaska
  8. 1.5 145 km NNW of Yakutat, Alaska
  9. 1.9 155 km SSE of Alcan Border, Alaska
  10. 1.8 127 km NNW of Yakutat, Alaska
  11. 1.6 157 km N of Yakutat, Alaska
  12. 1.5 154 km ESE of McCarthy, Alaska
  13. 1.9 132 km ESE of McCarthy, Alaska
  14. 1.8 132 km ESE of McCarthy, Alaska
  15. 2.2 129 km ESE of McCarthy, 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 4.8 on 2023-08-06 — it released about 11 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.