QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

18 km SW of Lowell Point, Alaska

· 12 km deep · released about 950 lb of TNT

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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 3.0 (ml)
Depth
12 km below the surface
Felt
2 reports · strongest reported intensity III
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2185 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 59.9345, -149.6359. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 1.7 19 km SSW of Lowell Point, Alaska
  2. 1.5 20 km SSW of Lowell Point, Alaska
  3. 2.1 22 km WNW of Bear Creek, Alaska
  4. 1.6 16 km W of Lowell Point, Alaska
  5. 2.0 60 km S of Lowell Point, Alaska
  6. 1.7 Kenai Peninsula, Alaska
  7. 1.6 34 km SSW of Cooper Landing, Alaska
  8. 1.5 41 km WSW of Lowell Point, Alaska
  9. 2.7 47 km ESE of Fox River, Alaska
  10. 2.2 46 km ESE of Fox River, Alaska
  11. 1.6 25 km WNW of Seward, Alaska
  12. 1.6 12 km ESE of Bear Creek, Alaska
  13. 1.8 21 km SSE of Cooper Landing, Alaska
  14. 1.5 29 km SSW of Cooper Landing, Alaska
  15. 1.5 18 km E 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.