Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Haines, AK
No earthquake was likely felt in Haines in the 24 hours to 6:15 am AKST (15:15 UTC). The last one was M 3.5, 60 km (37 mi) NW, at 3:19 am AKDT on 8 April 2026, estimated intensity II (weak) in town; 3 felt reports to USGS. Every earthquake near Haines
This page: a magnitude 1.9 earthquake was recorded 34 km (21 mi) south of Haines, AK, at 2:53 pm AKDT on 31 May 2021 (22:53 UTC), 10 km deep.
USGS: 25 km S of Mud Bay, Alaska
- When
- 2:53 pm AKDT on 31 May 2021 ()
- Where
- 34 km (21 mi) south of Haines, AK · earthquakes near Haines
- Magnitude
- M 1.9 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Haines Borough, 22 km NNW
- Nearest mapped fault
- Denali fault, 9 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1984 days ago
Earthquake alerts for Haines, AK
Get a notification in this browser when USGS records an earthquake near Haines, AK. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. In Haines, 34 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.
How big was it?
This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:
- 5.0 23 km SSE of Mud Bay, Alaska · 9 km ENE 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 58.9312, -135.3813. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Haines Borough, AK | 22 km (13 mi) | NNW | earthquakes near Haines Borough |
| Hoonah-Angoon Census Area, AK | 66 km (41 mi) | SSW | earthquakes near Hoonah-Angoon Census Area |
| Skagway Municipality, AK | 70 km (43 mi) | N | earthquakes near Skagway Municipality |
| Juneau City and Borough, AK | 93 km (58 mi) | SE | earthquakes near Juneau City and Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
23 earthquakes have been recorded within 50 km since this one.
- 2.3 11 km WSW of Lutak, Alaska
- 3.5 26 km E of Mud Bay, Alaska
- 1.7 30 km NNE of Excursion Inlet, Alaska
- 1.5 3 km SSW of Mud Bay, Alaska
- 3.0 5 km WSW of Haines, Alaska
- 1.9 25 km S of Mud Bay, Alaska
- 1.5 34 km WSW of Mud Bay, Alaska
- 1.6 22 km S of Mud Bay, Alaska
- 2.0 Southeastern Alaska
- 2.0 25 km SSE of Mud Bay, Alaska
- 1.8 Southeastern Alaska
- 1.9 Southeastern Alaska
- 2.3 27 km SSE of Mud Bay, Alaska
- 2.2 16 km W of Mud Bay, Alaska
- 1.6 15 km SW of Haines, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.