QuakeIndex

other event · reviewed by a seismologist

M 3.0ml

13 km N of Four Mile Road, Alaska

· 16 km deep · released about 950 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 3.0 (ml)
Depth
16 km below the surface
Felt
11 reports · strongest reported intensity V
Nearest
Denali Borough, 124 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 319 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 11 people have reported feeling it to USGS.

USGS catalogues this as other event, not an earthquake.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 64.7235, -149.0886. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Denali Borough, AK 124 km (77 mi) NNE of here earthquakes near Denali Borough
Yukon-Koyukuk Census Area, AK 137 km (85 mi) ESE of here earthquakes near Yukon-Koyukuk Census Area

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

Aftershocks so far

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

  1. 1.5 27 km N of Four Mile Road, Alaska
  2. 2.1 7 km ESE of Anderson, Alaska
  3. 2.1 14 km NW of Four Mile Road, Alaska
  4. 1.6 31 km SE of Minto, Alaska
  5. 1.9 18 km N of Four Mile Road, Alaska
  6. 1.7 19 km ESE of Nenana, Alaska
  7. 2.7 19 km NNW of Four Mile Road, Alaska
  8. 2.1 15 km N of Four Mile Road, Alaska
  9. 2.8 20 km NNE of Four Mile Road, Alaska
  10. 1.7 12 km NNE of Four Mile Road, Alaska
  11. 1.5 7 km WNW of Four Mile Road, Alaska
  12. 1.6 7 km NW of Four Mile Road, Alaska
  13. 1.8 20 km WNW of Anderson, Alaska
  14. 1.7 8 km WNW of Four Mile Road, Alaska
  15. 1.6 37 km NNE of Four Mile Road, 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 4.5 on 2019-04-11 — it released about 180 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.