QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

28 km WSW of Covenant Life, Alaska

· 2.8 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Haines Borough 58 kmSkagway Municipality 70 kmHoonah-Angoon Census Area 108 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 3.4 (ml)
Depth
2.8 km below the surface
Felt
4 reports · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
Haines Borough, 58 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2719 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× 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 59.3239, -136.4925. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Haines Borough, AK 58 km (36 mi) WNW of here earthquakes near Haines Borough
Skagway Municipality, AK 70 km (44 mi) WSW of here earthquakes near Skagway Municipality
Hoonah-Angoon Census Area, AK 108 km (67 mi) NNW of here earthquakes near Hoonah-Angoon Census Area

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. 1.6 40 km SW of Covenant Life, Alaska
  2. 1.9 22 km SW of Covenant Life, Alaska
  3. 1.5 56 km WSW of Mosquito Lake, Alaska
  4. 1.6 65 km SW of Covenant Life, Alaska
  5. 1.7 67 km SW of Covenant Life, Alaska
  6. 1.8 35 km SSW of Covenant Life, Alaska
  7. 1.6 64 km WSW of Covenant Life, Alaska
  8. 2.0 43 km SW of Covenant Life, Alaska
  9. 3.6 63 km SW of Covenant Life, Alaska
  10. 2.8 64 km WSW of Covenant Life, Alaska
  11. 3.5 32 km SW of Covenant Life, Alaska
  12. 2.1 37 km WNW of Mosquito Lake, Alaska
  13. 1.9 70 km SW of Covenant Life, Alaska
  14. 1.6 40 km S of Covenant Life, Alaska
  15. 2.0 62 km WSW 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 4.9 on 2017-05-01 — it released about 180 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.