QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

13 km SE of Tyonek, Alaska

· 62 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Anchorage Municipality 94 kmKenai Peninsula Borough 99 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
62 km below the surface
Felt
no reports yet
Nearest
Anchorage Municipality, 94 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1150 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 60.9733, -150.9828. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Anchorage Municipality, AK 94 km (58 mi) WSW of here earthquakes near Anchorage Municipality
Kenai Peninsula Borough, AK 99 km (62 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

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

  1. 2.0 19 km NW of Nikiski, Alaska
  2. 2.0 9 km ESE of Nikiski, Alaska
  3. 1.5 9 km ESE of Point Possession, Alaska
  4. 1.7 7 km W of Salamatof, Alaska
  5. 1.5 16 km W of Point Possession, Alaska
  6. 2.8 20 km WNW of Beluga, Alaska
  7. 1.6 7 km WNW of Point Possession, Alaska
  8. 1.6 18 km W of Tyonek, Alaska
  9. 1.5 9 km ESE of Point Possession, Alaska
  10. 2.4 5 km NW of Beluga, Alaska
  11. 2.2 19 km N of Sterling, Alaska
  12. 1.6 11 km NE of Sterling, Alaska
  13. 1.6 9 km NW of Nikiski, Alaska
  14. 1.6 13 km ESE of Beluga, Alaska
  15. 1.8 26 km NNW of Beluga, 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.