QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

30 km NNW of Chistochina, Alaska

· 8.9 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Copper River Census Area 100 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 1.6 (ml)
Depth
8.9 km below the surface
Felt
no reports yet
Nearest
Copper River Census Area, 100 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 959 days ago

A magnitude 1.6 earthquake was recorded 30 km NNW of Chistochina, Alaska at 01:56 UTC on 2024-01-25. This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 5 earthquakes of M5 or more within 50 km:

  1. 5.9 44 km WNW of Mentasta Lake, Alaska · 39 km NNE of this epicentre
  2. 5.4 45 km WNW of Mentasta Lake, Alaska · 27 km NNE of this epicentre
  3. 5.2 41 km ENE of Paxson, Alaska · 38 km N of this epicentre
  4. 5.1 44 km ENE of Paxson, Alaska · 41 km N of this epicentre
  5. 5.0 16 km WNW of Mentasta Lake, Alaska · 43 km ENE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 62.8297, -144.8419. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Copper River Census Area, AK 100 km (62 mi) SSE earthquakes near Copper River Census Area
Southeast Fairbanks Census Area, AK 141 km (87 mi) NE earthquakes near Southeast Fairbanks Census Area

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

Aftershocks so far

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

  1. 1.5 45 km S of Dry Creek, Alaska
  2. 1.7 37 km ENE of Paxson, Alaska
  3. 2.1 34 km ENE of Paxson, Alaska
  4. 1.6 40 km ENE of Paxson, Alaska
  5. 1.5 38 km NW of Mentasta Lake, Alaska
  6. 1.6 31 km ENE of Paxson, Alaska
  7. 1.7 39 km NW of Mentasta Lake, Alaska
  8. 1.9 11 km N of Chistochina, Alaska
  9. 1.8 43 km WNW of Mentasta Lake, Alaska
  10. 2.5 29 km NNW of Chistochina, Alaska
  11. 2.7 36 km ENE of Paxson, Alaska
  12. 1.8 18 km ENE of Chistochina, Alaska
  13. 1.8 45 km S of Dry Creek, Alaska
  14. 2.4 36 km NW of Mentasta Lake, Alaska
  15. 2.1 37 km WNW of Mentasta Lake, 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.