Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Unalaska, AK
No earthquake was likely felt in Unalaska in the 24 hours to 8:56 pm AKST (05:56 UTC). The last one was M 4.4, 117 km (72 mi) ESE, at 3:00 pm AKST on 11 November 2026, estimated intensity II (weak) in town. Every earthquake near Unalaska
This page: a magnitude 2.5 earthquake was recorded 8 km (5 mi) southeast of Unalaska, AK, at 12:39 pm AKDT on 14 June 2025 (20:39 UTC), 12 km deep.
USGS: 8 km SE of Unalaska, Alaska
- When
- 12:39 pm AKDT on 14 June 2025 ()
- Where
- 8 km (5 mi) southeast of Unalaska, AK · earthquakes near Unalaska
- Magnitude
- M 2.5 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 448 days ago
Earthquake alerts for Unalaska, AK
Get a notification in this browser when USGS records an earthquake near Unalaska, 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 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 19 km (12 mi) from the epicentre. In Unalaska, 8 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: Unalaska 8 km, intensity II. Estimated for each town centre; each link is that town's own record.
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.
- Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
- Magna, Utah 2020 M 5.7 63,000× the energy of this one
- Around the size people start to feel M 3.0 5.6× the energy of this one
- 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.
For this area
The largest earthquake within 50 km since 2016 was M 4.8 on 2020-03-30 — about 2,800 times the energy of this one.
Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:
- 7.1 39 km S of Akutan, Alaska · 44 km E of this epicentre
- 6.2 57 km SE of Unalaska, Alaska · 49 km SE of this epicentre
- 6.2 36 km ESE of Unalaska, Alaska · 28 km ESE of this epicentre
- 5.9 27 km WNW of Dutch Harbor, Alaska · 36 km WNW of this epicentre
- 5.9 13 km NE of Dutch Harbor, Alaska · 16 km N 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 53.8255, -166.4370. Map © OpenStreetMap contributors.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 2.6 16 km SE of Unalaska, Alaska
- 1.9 33 km SW of Unalaska, Alaska
- 1.9 26 km SE of Unalaska, Alaska
- 1.9 21 km ESE of Unalaska, Alaska
- 1.6 30 km SSW of Unalaska, Alaska
- 2.6 24 km SE of Unalaska, Alaska
- 2.6 34 km SW of Unalaska, Alaska
- 1.6 35 km SSW of Unalaska, Alaska
- 1.5 27 km SE of Unalaska, Alaska
- 3.3 29 km SE of Unalaska, Alaska
- 2.5 24 km SSW of Akutan, Alaska
- 3.4 38 km S of Unalaska, Alaska
- 3.3 25 km SE of Unalaska, Alaska
- 1.6 49 km SSW of Unalaska, Alaska
- 1.8 20 km WSW of Akutan, 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.