QuakeIndex

Earthquake · automatic estimate, may change

M 2.0ml

63 km ESE of Halibut Cove, Alaska

· 20 km deep · released about 30 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N
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 2.0 (ml)
Depth
20 km below the surface
Felt
no reports yet
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1842 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 59.4340, -150.1413. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 1.5 Kenai Peninsula, Alaska
  2. 1.6 43 km SW of Lowell Point, Alaska
  3. 1.5 Kenai Peninsula, Alaska
  4. 1.7 93 km ESE of Halibut Cove, Alaska
  5. 1.8 76 km SE of Halibut Cove, Alaska
  6. 1.5 51 km ESE of Fox River, Alaska
  7. 2.0 55 km SE of Halibut Cove, Alaska
  8. 1.6 Kenai Peninsula, Alaska
  9. 2.2 52 km ESE of Fox River, Alaska
  10. 2.1 22 km ESE of Fox River, Alaska
  11. 1.9 18 km ESE of Fox River, Alaska
  12. 1.6 61 km SE of Halibut Cove, Alaska
  13. 2.2 19 km ESE of Fox River, Alaska
  14. 1.8 45 km SW of Lowell Point, Alaska
  15. 1.6 57 km SSW of Lowell Point, 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.