QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

62 km ESE of Denali Park, Alaska

· 84 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Denali Borough 116 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 1.8 (ml)
Depth
84 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Denali Borough, 116 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1513 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 63.6152, -147.6843. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Denali Borough, AK 116 km (72 mi) E of here earthquakes near Denali Borough
Fairbanks North Star Borough, AK 131 km (81 mi) SSW 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

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

  1. 1.6 72 km ESE of Denali Park, Alaska
  2. 2.1 77 km ESE of Denali Park, Alaska
  3. 1.8 63 km ESE of Denali Park, Alaska
  4. 1.6 62 km SW of Harding-Birch Lakes, Alaska
  5. 3.0 61 km SW of Harding-Birch Lakes, Alaska
  6. 2.0 62 km ESE of Denali Park, Alaska
  7. 1.8 80 km E of Denali Park, Alaska
  8. 1.7 67 km E of Cantwell, Alaska
  9. 2.9 61 km SW of Harding-Birch Lakes, Alaska
  10. 2.0 62 km ESE of Denali Park, Alaska
  11. 2.2 81 km E of Cantwell, Alaska
  12. 1.7 72 km ESE of Denali Park, Alaska
  13. 1.9 69 km E of Denali Park, Alaska
  14. 3.0 59 km ENE of Cantwell, Alaska
  15. 1.6 76 km E of Cantwell, 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.