QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

24 km ESE of Kasilof, Alaska

· 58 km deep · released about 21 lb of TNT

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10 km30 km60 km120 km N Kenai Peninsula 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 1.9 (ml)
Depth
58 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 80 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 983 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 60.2298, -150.8987. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kenai Peninsula Borough, AK 80 km (50 mi) E of here earthquakes near Kenai Peninsula Borough
Anchorage Municipality, AK 137 km (85 mi) SW of here earthquakes near Anchorage Municipality

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

Aftershocks so far

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

  1. 1.9 11 km ESE of Nikiski, Alaska
  2. 1.7 21 km SE of Kasilof, Alaska
  3. 1.5 16 km ESE of Clam Gulch, Alaska
  4. 1.7 4 km S of Clam Gulch, Alaska
  5. 1.8 15 km SSE of Funny River, Alaska
  6. 2.2 18 km ESE of Kasilof, Alaska
  7. 1.7 14 km SSE of Funny River, Alaska
  8. 1.6 2 km N of Kenai, Alaska
  9. 1.5 22 km SSE of Clam Gulch, Alaska
  10. 1.8 14 km S of Clam Gulch, Alaska
  11. 2.6 14 km NNE of Ridgeway, Alaska
  12. 1.9 7 km SE of Kasilof, Alaska
  13. 1.6 10 km ESE of Clam Gulch, Alaska
  14. 1.5 18 km SSE of Clam Gulch, Alaska
  15. 1.7 12 km ESE of Fox River, 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 4.7 on 2019-07-03 — it released about 16,000 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.