QuakeIndex

Earthquake · reviewed by a seismologist

M 4.6mb

37 km SW of Sand Point, Alaska

· 65 km deep · released about 120 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aleutians East Borough 69 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 4.6 (mb)
Depth
65 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Aleutians East Borough, 69 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1140 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 120 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 1,400× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 63× the energy of this one
  3. Magna, Utah 2020 M 5.7 45× the energy of this one
  4. This earthquake M 4.6 about 120 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 250× more

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 55.1197, -160.9404. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aleutians East Borough, AK 69 km (43 mi) ESE of here earthquakes near Aleutians East Borough

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

Aftershocks so far

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

  1. 1.8 54 km S of Sand Point, Alaska
  2. 3.1 62 km S of Sand Point, Alaska
  3. 2.5 55 km WSW of Sand Point, Alaska
  4. 2.1 63 km S of Sand Point, Alaska
  5. 2.5 38 km S of Sand Point, Alaska
  6. 2.9 29 km SSW of Sand Point, Alaska
  7. 2.3 12 km WSW of Sand Point, Alaska
  8. 1.9 62 km S of Sand Point, Alaska
  9. 2.1 61 km SSW of Sand Point, Alaska
  10. 2.8 38 km SW of Sand Point, Alaska
  11. 1.8 53 km S of Sand Point, Alaska
  12. 3.3 18 km NW of Sand Point, Alaska
  13. 2.6 64 km ESE of King Cove, Alaska
  14. 1.9 20 km SSW of Sand Point, Alaska
  15. 2.1 41 km SW of Sand 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.