QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km ESE of Tyonek, Alaska

· 68 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 99 kmKenai Peninsula Borough 102 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 1.5 (ml)
Depth
68 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 99 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1153 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 61.0603, -151.1073. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 99 km (61 mi) W of here earthquakes near Anchorage Municipality
Kenai Peninsula Borough, AK 102 km (63 mi) NE of here earthquakes near Kenai Peninsula Borough

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

Aftershocks so far

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

  1. 1.6 23 km NNE of Beluga, Alaska
  2. 2.2 20 km SW of Susitna, Alaska
  3. 1.5 28 km NNW of Beluga, Alaska
  4. 2.6 4 km SW of Point Possession, Alaska
  5. 1.5 14 km WSW of Tyonek, Alaska
  6. 2.1 10 km WNW of Point Possession, Alaska
  7. 2.4 25 km NNW of Beluga, Alaska
  8. 1.9 4 km NE of Point Possession, Alaska
  9. 3.1 27 km WSW of Susitna, Alaska
  10. 1.6 11 km WSW of Point Possession, Alaska
  11. 1.6 26 km SW of Susitna, Alaska
  12. 2.0 16 km NE of Nikiski, Alaska
  13. 1.7 9 km N of Ridgeway, Alaska
  14. 2.3 14 km NNE of Nikiski, Alaska
  15. 1.5 14 km E 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.