QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

48 km SW of Harding-Birch Lakes, Alaska

· 8.0 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fairbanks North Star Borough 80 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 2.2 (ml)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Fairbanks North Star Borough, 80 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 226 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 64.0130, -147.1610. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fairbanks North Star Borough, AK 80 km (50 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

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

  1. 1.7 62 km E of Denali Park, Alaska
  2. 1.9 70 km ESE of Denali Park, Alaska
  3. 1.7 49 km SSW of Harding-Birch Lakes, Alaska
  4. 1.8 70 km E of Denali Park, Alaska
  5. 2.0 68 km E of Denali Park, Alaska
  6. 1.6 65 km E of Denali Park, Alaska
  7. 1.8 81 km E of Denali Park, Alaska
  8. 1.5 86 km SW of Delta Junction, Alaska
  9. 1.9 69 km E of Denali Park, Alaska
  10. 1.6 84 km E of Denali Park, Alaska
  11. 1.6 67 km E of Denali Park, Alaska
  12. 1.6 13 km WSW of Harding-Birch Lakes, Alaska
  13. 1.6 63 km WSW of Delta Junction, Alaska
  14. 1.6 29 km WSW of Salcha, Alaska
  15. 1.5 70 km SW of Whitestone, 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 4.1 on 2021-11-05 — it released about 710 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.