QuakeIndex

Earthquake · automatic estimate, may change

M 2.8ml

6 km ENE of Soldotna, Alaska

· 55 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kenai Peninsula Borough 77 kmAnchorage Municipality 116 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 2.8 (ml)
Depth
55 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Kenai Peninsula Borough, 77 km WSW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1844 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 60.5185, -150.9521. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kenai Peninsula Borough, AK 77 km (48 mi) ENE of here earthquakes near Kenai Peninsula Borough
Anchorage Municipality, AK 116 km (72 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

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

  1. 1.9 4 km SW of Kasilof, Alaska
  2. 3.9 5 km SSW of Kasilof, Alaska
  3. 1.5 17 km ESE of Clam Gulch, Alaska
  4. 2.0 10 km SSE of Kasilof, Alaska
  5. 1.5 16 km NNW of Sterling, Alaska
  6. 1.5 16 km ENE of Sterling, Alaska
  7. 1.5 0 km SSE of Sterling, Alaska
  8. 1.7 8 km NE of Nikiski, Alaska
  9. 1.6 12 km E of Kasilof, Alaska
  10. 2.0 12 km NNE of Ridgeway, Alaska
  11. 1.6 20 km SW of Point Possession, Alaska
  12. 1.6 13 km ENE of Sterling, Alaska
  13. 1.5 20 km E of Kasilof, Alaska
  14. 2.4 33 km SSE of Funny River, Alaska
  15. 2.6 17 km N of Nikiski, 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 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.