| Magnitude | 5.5 |
| Alert | Strong |
| Depth | 41.0 km |
| Coordinates | 51.179, 178.249 |
| UTC time | 1977-09-04 23:20:44.900 |
Earthquake details
Sunday, September 4, 1977 Earthquake
The earthquake hit Alaska on Sunday, September 4, 1977 at 23:20 UTC with a magnitude of 5.5. The closest known location in the current dataset is Petropavlovsk-Kamchatskiy (Alaska - AL), about 1353.0 km away. The epicenter is located at longitude 178.249 and latitude 51.179.
| Location | Rat Islands, Aleutian Islands |
| Country | Alaska (AL) |
| Severity | Strong |
Earthquake map 1977-09-04
Closest countries
The 12 closest cities near the epicenter.
| Petropavlovsk-Kamchatskiy | 1353.0 km |
| Yelizovo | 1369.7 km |
| Magadan | 1951.2 km |
| Anchorage | 2234.8 km |
| Fairbanks | 2468.1 km |
| Nemuro | 2593.7 km |
| Yuzhno-Sakhalinsk | 2606.0 km |
| Korsakov | 2617.5 km |
| Abashiri | 2645.1 km |
| Kholmsk | 2649.7 km |
| Kitami | 2683.5 km |
| Sovetskaya Gavan' | 2692.7 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.2
Rat Islands, Aleutian Islands
Alaska · 2026-08-20 02:45 UTC
41.2 km
M 4.1
Rat Islands, Aleutian Islands
Alaska · 2026-07-29 12:45 UTC
78.4 km
M 4.1
Rat Islands, Aleutian Islands
Alaska · 2026-07-13 19:01 UTC
36.8 km
M 4.6
Rat Islands, Aleutian Islands
Alaska · 2026-05-27 05:57 UTC
45.1 km
M 4.7
295 km WSW of Adak
Alaska · 2026-04-20 09:54 UTC
75.2 km
M 4.5
Rat Islands, Aleutian Islands
Alaska · 2026-04-04 09:39 UTC
24.4 km
M 4.9
Rat Islands, Aleutian Islands
Alaska · 2026-02-14 07:10 UTC
92.6 km
M 4.0
Rat Islands, Aleutian Islands
Alaska · 2026-02-05 19:33 UTC
81.6 km
Stay informed
Earthquake alerts
Create targeted notifications for important seismic activity near the places you follow.