QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

12 km SW of Cooper Landing, Alaska

· 51 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Anchorage Municipality 92 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
51 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 92 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 521 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 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.

Where

Epicentre 60.4202, -150.0013. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 92 km (57 mi) SSW of here earthquakes near Anchorage Municipality

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

Aftershocks so far

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

  1. 1.6 44 km ENE of Fox River, Alaska
  2. 1.6 26 km SE of Point Possession, Alaska
  3. 1.8 15 km SSW of Sunrise, Alaska
  4. 1.7 22 km ESE of Funny River, Alaska
  5. 1.5 32 km SW of Cooper Landing, Alaska
  6. 1.7 28 km NNW of Cooper Landing, Alaska
  7. 2.5 14 km ESE of Funny River, Alaska
  8. 2.2 14 km ESE of Funny River, Alaska
  9. 1.5 21 km SE of Point Possession, Alaska
  10. 1.7 19 km NNE of Cooper Landing, Alaska
  11. 2.0 23 km SSE of Point Possession, Alaska
  12. 1.5 32 km ENE of Sterling, Alaska
  13. 1.6 36 km WNW of Seward, Alaska
  14. 1.8 18 km W of Cooper Landing, Alaska
  15. 3.4 17 km ENE of Sterling, 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 4.0 on 2016-11-21 — it released about 4,000 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.