QuakeIndex

Earthquake · automatic estimate, may change

M 2.5ml

16 km WSW of Lutak, Alaska

· 20 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Haines Borough 22 kmSkagway Municipality 43 kmHoonah-Angoon Census Area 95 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 2.5 (ml)
Depth
20 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Haines Borough, 22 km SE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1758 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 59.2605, -135.8043. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Haines Borough, AK 22 km (14 mi) NW of here earthquakes near Haines Borough
Skagway Municipality, AK 43 km (26 mi) SW of here earthquakes near Skagway Municipality
Hoonah-Angoon Census Area, AK 95 km (59 mi) N of here earthquakes near Hoonah-Angoon Census Area
Juneau City and Borough, AK 136 km (85 mi) NW of here earthquakes near Juneau City and 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. 2.6 20 km SSW of Covenant Life, Alaska
  2. 1.5 11 km NE of Mosquito Lake, Alaska
  3. 2.7 36 km WSW of Mud Bay, Alaska
  4. 2.0 Southeastern Alaska
  5. 2.0 25 km SSE of Mud Bay, Alaska
  6. 1.6 31 km SSW of Covenant Life, Alaska
  7. 1.8 26 km S of Covenant Life, Alaska
  8. 1.9 Southeastern Alaska
  9. 1.5 22 km SSW of Covenant Life, Alaska
  10. 2.1 5 km ENE of Klukwan, Alaska
  11. 1.7 Southeastern Alaska
  12. 2.3 27 km SSE of Mud Bay, Alaska
  13. 1.7 34 km SSW of Covenant Life, Alaska
  14. 2.2 16 km W of Mud Bay, Alaska
  15. 1.9 22 km S of Covenant Life, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2021-07-08 — it released about 710 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.