QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

68 km W of Nanwalek, Alaska

Yes. A magnitude 2.6 earthquake was recorded 68 km W of Nanwalek, Alaska at 21:00 UTC on 2024-12-07, 93 km deep.

· 93 km deep · released about 240 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 2.6 (ml)
Depth
93 km below the surface
Felt
no reports yet
Nearest
Kenai Peninsula Borough, 124 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 636 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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.

For this area

The largest earthquake within 50 km since 2016 was M 7.1 on 2016-01-24 — about 5,600,000 times the energy of this one.

Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.0 61 km WSW of Nanwalek, Alaska · 24 km SSE of this epicentre
  2. 5.9 Southern Alaska · 18 km NE of this epicentre
  3. 5.8 63 km WSW of Nanwalek, Alaska · 30 km SSE of this epicentre
  4. 5.6 67 km SE of Pedro Bay, Alaska · 13 km N of this epicentre
  5. 5.5 73 km WSW of Nanwalek, Alaska · 36 km S of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 59.3211, -153.1165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kenai Peninsula Borough, AK 124 km (77 mi) NNE earthquakes near Kenai Peninsula Borough

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

Aftershocks so far

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

  1. 1.9 59 km W of Nanwalek, Alaska
  2. 2.4 39 km W of Nanwalek, Alaska
  3. 2.1 52 km ESE of Pedro Bay, Alaska
  4. 1.8 65 km ESE of Pedro Bay, Alaska
  5. 1.9 48 km ESE of Pedro Bay, Alaska
  6. 1.7 63 km ESE of Pedro Bay, Alaska
  7. 1.8 47 km ESE of Pedro Bay, Alaska
  8. 1.5 76 km SE of Pope-Vannoy Landing, Alaska
  9. 1.7 50 km E of Pedro Bay, Alaska
  10. 1.8 36 km ESE of Pedro Bay, Alaska
  11. 2.2 33 km ESE of Pedro Bay, Alaska
  12. 1.6 51 km WSW of Nanwalek, Alaska
  13. 1.8 60 km WSW of Anchor Point, Alaska
  14. 2.0 65 km ESE of Pedro Bay, Alaska
  15. 2.1 37 km ESE of Pedro Bay, 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.