QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

161 km ESE of McCarthy, Alaska

· 2.7 km deep · released about 21 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 1.9 (ml)
Depth
2.7 km below the surface
Felt
no reports yet
Nearest
Yakutat City and Borough, 122 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 130 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 61.0910, -140.0000. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yakutat City and Borough, AK 122 km (76 mi) N 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

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

  1. 1.7 159 km ESE of McCarthy, Alaska
  2. 1.5 159 km E of McCarthy, Alaska
  3. 1.8 152 km E of McCarthy, Alaska
  4. 1.8 140 km NNW of Yakutat, Alaska
  5. 1.8 141 km ESE of McCarthy, Alaska
  6. 1.8 153 km E of McCarthy, Alaska
  7. 1.9 156 km N of Yakutat, Alaska
  8. 2.6 157 km ESE of McCarthy, Alaska
  9. 1.8 160 km E of McCarthy, Alaska
  10. 1.8 146 km NNW of Yakutat, Alaska
  11. 1.6 152 km E of McCarthy, Alaska
  12. 1.6 159 km ESE of McCarthy, Alaska
  13. 1.6 152 km SSE of Alcan Border, Alaska
  14. 1.6 158 km ESE of McCarthy, Alaska
  15. 1.5 156 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 22,000 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.