QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

Earthquake near Skagway, AK

No earthquake was likely felt in Skagway in the 24 hours to 7:52 pm AKST (04:52 UTC). The last one was M 3.5, 49 km (30 mi) WNW, at 3:19 am AKDT on 8 April 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Skagway

This page: a magnitude 3.2 earthquake was recorded 37 km (23 mi) east of Skagway, AK, at 6:22 pm AKDT on 29 May 2017 (02:22 UTC), 12 km deep.

USGS: 37 km E of Skagway, Alaska

6:22 pm AKDT, May 29, 2017 · · 12 km deep · released about 1,900 lb of TNT

10 km30 km60 km120 km N Skagway Municipality 40 kmHaines Borough 66 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
6:22 pm AKDT on 29 May 2017 ()
Where
37 km (23 mi) east of Skagway, AK · earthquakes near Skagway
Magnitude
M 3.2 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Skagway Municipality, 40 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1192 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, people at rest would likely notice it out to about 45 km (28 mi) from the epicentre. In Skagway, 37 km away, the estimate is intensity II (weak). 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.

Likely felt in: Skagway 37 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 59.4658, -134.6563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Skagway Municipality, AK 40 km (25 mi) WNW earthquakes near Skagway Municipality
Haines Borough, AK 66 km (41 mi) SW earthquakes near Haines Borough
Hoonah-Angoon Census Area, AK 138 km (85 mi) SSW earthquakes near Hoonah-Angoon Census Area

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

Aftershocks so far

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

  1. 3.5 26 km E of Mud Bay, Alaska
  2. 2.3 34 km E of Skagway, Alaska
  3. 3.3 48 km ESE of Mud Bay, Alaska
  4. 1.8 52 km E of Mud Bay, Alaska
  5. 1.9 51 km E of Mud Bay, Alaska
  6. 1.8 37 km ESE of Mud Bay, Alaska
  7. 1.8 44 km ESE of Skagway, Alaska
  8. 2.0 50 km ESE of Mud Bay, Alaska
  9. 2.4 51 km ESE of Mud Bay, Alaska
  10. 4.2 51 km ESE of Mud Bay, Alaska
  11. 1.7 36 km ESE of Skagway, Alaska
  12. 1.6 47 km ESE of Skagway, Alaska
  13. 1.6 29 km ESE of Mud Bay, Alaska
  14. 1.7 48 km ESE of Skagway, Alaska
  15. 1.7 16 km SE of Skagway, 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.