QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

8 km WSW of Pedro Bay, Alaska

· 178 km deep · released about 340 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 2.7 (ml)
Depth
178 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 127 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1151 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 59.7467, -154.2427. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kenai Peninsula Borough, AK 127 km (79 mi) WSW 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

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

  1. 1.8 11 km SE of Pedro Bay, Alaska
  2. 2.1 30 km SE of Pedro Bay, Alaska
  3. 2.0 8 km ESE of Pope-Vannoy Landing, Alaska
  4. 1.9 9 km ENE of Pedro Bay, Alaska
  5. 2.0 22 km ENE of Pedro Bay, Alaska
  6. 1.8 26 km SSE of Pedro Bay, Alaska
  7. 1.9 25 km ESE of Pedro Bay, Alaska
  8. 2.3 21 km NNE of Pedro Bay, Alaska
  9. 3.1 39 km ESE of Pope-Vannoy Landing, Alaska
  10. 1.9 27 km SE of Pedro Bay, Alaska
  11. 2.0 24 km SSE of Pedro Bay, Alaska
  12. 2.0 34 km ESE of Port Alsworth, Alaska
  13. 1.8 23 km ESE of Pope-Vannoy Landing, Alaska
  14. 3.4 24 km SE of Pedro Bay, Alaska
  15. 2.0 5 km SE of Pope-Vannoy Landing, 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.