QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6ml

36 km ESE of McKinley Park, Alaska

· 86 km deep · released about 3.8 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Denali Borough 90 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 3.6 (ml)
Depth
86 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Denali Borough, 90 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1137 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× 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 63.6438, -148.1946. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Denali Borough, AK 90 km (56 mi) E of here earthquakes near Denali Borough
Fairbanks North Star Borough, AK 141 km (87 mi) SW of here earthquakes near Fairbanks North Star Borough

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 1.8 30 km ESE of Cantwell, Alaska
  2. 1.6 47 km ESE of McKinley Park, Alaska
  3. 2.5 62 km ESE of McKinley Park, Alaska
  4. 1.8 18 km E of Ferry, Alaska
  5. 1.6 18 km SSE of McKinley Park, Alaska
  6. 1.8 42 km ENE of Cantwell, Alaska
  7. 1.8 29 km SE of Cantwell, Alaska
  8. 1.6 65 km ESE of McKinley Park, Alaska
  9. 2.0 25 km ENE of McKinley Park, Alaska
  10. 1.7 56 km E of McKinley Park, Alaska
  11. 1.8 34 km ESE of Cantwell, Alaska
  12. 2.0 17 km ENE of Healy, Alaska
  13. 2.1 32 km ENE of Cantwell, Alaska
  14. 1.6 63 km ESE of McKinley Park, Alaska
  15. 3.2 63 km ESE of McKinley Park, 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.