QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

122 km WNW of Haines Junction, Canada

· 8.0 km deep · released about 1,900 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 3.2 (ml)
Depth
8.0 km below the surface
Felt
no reports yet
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1726 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 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× 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 61.2634, -139.5139. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 1.7 157 km E of McCarthy, Alaska
  2. 1.5 156 km E of McCarthy, Alaska
  3. 4.0 159 km E of McCarthy, Alaska
  4. 1.7 149 km N of Yakutat, Alaska
  5. 2.0 Southern Yukon Territory, Canada
  6. 2.1 180 km SE of Alcan Border, Alaska
  7. 1.5 158 km E of McCarthy, Alaska
  8. 1.5 157 km E of McCarthy, Alaska
  9. 3.3 158 km E of McCarthy, Alaska
  10. 3.2 Southern Yukon Territory, Canada
  11. 1.5 157 km E of McCarthy, Alaska
  12. 1.6 157 km E of McCarthy, Alaska
  13. 2.2 159 km SSE of Alcan Border, Alaska
  14. 1.7 158 km E of McCarthy, Alaska
  15. 1.5 156 km E 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 4.0 on 2017-11-05 — it released about 16 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.