Earthquake 227 km S of Unalaska, Alaska (4.8 mb) (2025-09-16 11:55:57 UTC)
A 4.8 magnitude earthquake struck on 227 km S of Unalaska, Alaska, at 2025-09-16 11:55:57 UTC. Reviewed by USGS seismologists, this minor quake occurred at a magnitude type of mb and was felt in surrounding areas. Stay updated on earthquake activity in 227 km S of Unalaska, Alaska
Recommendation
Strong Earthquake
Strong Earthquake
Action
Moderate shaking can cause damage to weak structures.
Suggestion
Indoors: Drop, Cover, and Hold On. Stay away from windows and heavy furniture. Outdoors: Move to an open space. If in a car: Pull over and stop in a safe area.
Magnitudo (mb)
4.8
Confirmed
USGS
Summary
- Intensity: 0
- Tsunami: 0
- ID: usgs_us7000qwgh
Nearest Places
- Unalaska Basin / 108.69 km
- Usof Canyon / 143.63 km
- Umnak Basin / 148.73 km
- Cape Prominence / 183.47 km
- Raven Bay / 184.81 km
Comment
Latest Earthquake
1.9
11 km SW of Volcano, Hawaii
Time:
Depth: 0.35 km
Source: USGS (Automatic)
Time:
Depth: 0.35 km
Source: USGS (Automatic)
2.5
AEGEAN SEA
Time:
Depth: 16.00 km
Source: EMSC (Automatic)
Time:
Depth: 16.00 km
Source: EMSC (Automatic)
1.7
WESTERN TURKEY
Time:
Depth: 7.00 km
Source: EMSC (Automatic)
Time:
Depth: 7.00 km
Source: EMSC (Automatic)
3.1
FLORES SEA
Time:
Depth: 27.00 km
Source: EMSC (Automatic)
Time:
Depth: 27.00 km
Source: EMSC (Automatic)
3.1
Flores Sea
Time:
Depth: 26.51 km
Source: BMKG (Automatic)
Time:
Depth: 26.51 km
Source: BMKG (Automatic)
Nearest Earthquake
5.0
SOUTH OF ALEUTIAN ISLANDS
Time:
Depth: 10.00 km
Source: EMSC (Automatic)
Time:
Depth: 10.00 km
Source: EMSC (Automatic)