| Magnitude | 6.4 |
| Alert | Severe |
| Depth | 34.0 km |
| Coordinates | 51.207, 178.388 |
| UTC time | 1977-09-04 15:40:57.300 |
Earthquake details
Sunday, September 4, 1977 Earthquake
The earthquake hit Alaska on Sunday, September 4, 1977 at 15:40 UTC with a magnitude of 6.4. The closest known location in the current dataset is Petropavlovsk-Kamchatskiy (Alaska - AL), about 1361.4 km away. The epicenter is located at longitude 178.388 and latitude 51.207.
| Location | Rat Islands, Aleutian Islands |
| Country | Alaska (AL) |
| Severity | Severe |
Earthquake map 1977-09-04
Closest countries
The 12 closest cities near the epicenter.
| Petropavlovsk-Kamchatskiy | 1361.4 km |
| Yelizovo | 1378.0 km |
| Magadan | 1956.8 km |
| Anchorage | 2225.5 km |
| Fairbanks | 2459.5 km |
| Nemuro | 2603.7 km |
| Yuzhno-Sakhalinsk | 2615.5 km |
| Korsakov | 2627.1 km |
| Abashiri | 2655.0 km |
| Kholmsk | 2659.1 km |
| Kitami | 2693.4 km |
| Sovetskaya Gavan' | 2701.7 km |
Nearby earthquakes
The latest 8 earthquakes within 100 km of this epicenter.
M 4.2
Rat Islands, Aleutian Islands
Alaska · 2026-10-19 16:27 UTC
34.6 km
M 4.5
Rat Islands, Aleutian Islands
Alaska · 2026-10-19 16:27 UTC
20.2 km
M 4.4
275 km W of Adak
Alaska · 2026-10-11 12:16 UTC
89.8 km
M 4.4
259 km WSW of Adak
Alaska · 2026-09-27 10:30 UTC
95.8 km
M 5.0
Rat Islands, Aleutian Islands
Alaska · 2026-09-27 07:48 UTC
74.1 km
M 4.6
Rat Islands, Aleutian Islands
Alaska · 2026-09-27 07:48 UTC
73.4 km
M 4.4
263 km WSW of Adak
Alaska · 2026-09-26 17:02 UTC
95.0 km
M 4.2
Rat Islands, Aleutian Islands
Alaska · 2026-08-20 02:45 UTC
36.4 km
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