QuakeIndex

Earthquake · reviewed by a seismologist

M 5.2ml

122 km SE of McCarthy, Alaska

· 8.5 km deep · released about 950 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yakutat City and Borough 86 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 5.2 (ml)
Depth
8.5 km below the surface
Felt
11 reports · strongest reported intensity III
Measured shaking
intensity VI (ShakeMap)
Nearest
Yakutat City and Borough, 86 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre. 11 people have reported feeling it to USGS.

How big was it?

This earthquake released about 950 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7.9× the energy of this one
  3. Magna, Utah 2020 M 5.7 5.6× the energy of this one
  4. This earthquake M 5.2 about 950 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2,000× 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 60.5690, -141.5080. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yakutat City and Borough, AK 86 km (53 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

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

  1. 1.5 128 km SE of McCarthy, Alaska
  2. 2.2 132 km SE of McCarthy, Alaska
  3. 1.5 133 km NW of Yakutat, Alaska
  4. 1.8 116 km NW of Yakutat, Alaska
  5. 1.6 115 km NW of Yakutat, Alaska
  6. 1.5 115 km NW of Yakutat, Alaska
  7. 1.7 106 km NW of Yakutat, Alaska
  8. 1.6 110 km NW of Yakutat, Alaska
  9. 1.7 112 km NW of Yakutat, Alaska
  10. 2.3 120 km NW of Yakutat, Alaska
  11. 1.6 136 km SE of McCarthy, Alaska
  12. 1.9 132 km NW of Yakutat, Alaska
  13. 1.5 106 km NW of Yakutat, Alaska
  14. 1.6 114 km SSE of McCarthy, Alaska
  15. 1.5 134 km SSE 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 5.0 on 2022-09-29.

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

On USGS

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