Isanotski Volcano
Updated: Mar 22, 2025 15:29 GMT -
Stratovolcano
United States, Aleutian Islands, 54.77°N / -163.72°W 
Summit height: 2446 m / 8,025 ft
Current status: normal or dormant (1 out of 5)
[smaller] [larger]
Isanotski volcano eruptions: unknown, no recent eruptions
Latest nearby earthquakes
| Date and Time | Mag / Depth | Distance / Location | |||
|---|---|---|---|---|---|
| Mar 19, 11:42 pm (Universal Time) | 1.1 12 km | 11 km (6.8 mi) to the W | 32 km WSW of False Pass, Alaska | Info | |
| Wednesday, March 12, 2025 GMT (1 quake) | |||||
| Mar 12, 10:46 am (Universal Time) | 0.4 5.3 km | 14 km (8.7 mi) to the W | 36 km WSW of False Pass, Alaska | Info | |
| Monday, March 10, 2025 GMT (1 quake) | |||||
| Mar 10, 12:13 am (Universal Time) | 1.8 6.4 km | 18 km (11 mi) to the S | 30 km SSW of False Pass, Alaska | Info | |
Background
Rugged pinnacles form the summit of the deeply eroded Isanotski stratovolcano, locally known as Ragged Jack. Isanotski is at the center of an E-W-trending group of three volcanoes on eastern Unimak Island. Four poorly documented historical eruptions were noted in the 18th and 19th centuries. However, Miller et al. (1998) considered that some or all of these eruptions could have been from neighboring Shishaldin volcano and that historical eruptions of Isanotski must be considered unlikely, given the extreme degree of erosional dissection.---
Smithsonian / GVP volcano information
Isanotski Volcano Photos
The chain of volcanoes on Unimak, from left to right: Roundtop Mountain, Isanotski, Pogromni and Shishaldin. (Photo: marcofulle)
Whereas Shishaldin is a superb example of a young, symmetric stratovolcano, the much older Isanotski is irregular and deeply eroded. (Photo: marcofulle)
Latest satellite images
Isanotski Volcano Maps
Below is a selection of maps showing the location and surroundings of the volcano at various resolutions based on aerial-imagery / terrain maps. Feel free to use them for non-commercial purposes on your blog or website as long as you credit them with a link back to this page (click to copy it).
Satellite/aerial-type map of Isanotski volcano (world scale)
Terrain-type map of Isanotski volcano (world scale)
Satellite/aerial-type map of Isanotski volcano (region scale large)
Terrain-type map of Isanotski volcano (region scale large)
Satellite/aerial-type map of Isanotski volcano (region scale medium)
Terrain-type map of Isanotski volcano (region scale medium)
Satellite/aerial-type map of Isanotski volcano (region scale small)
Terrain-type map of Isanotski volcano (region scale small)
Satellite/aerial-type map of Isanotski volcano (local scale large)
Terrain-type map of Isanotski volcano (local scale large)
Satellite/aerial-type map of Isanotski volcano (local scale medium)
Terrain-type map of Isanotski volcano (local scale medium)
Satellite/aerial-type map of Isanotski volcano (local scale small)
Terrain-type map of Isanotski volcano (local scale small)
Satellite/aerial-type map of Isanotski volcano (scale of 10s of km)
Terrain-type map of Isanotski volcano (scale of 10s of km)
Satellite/aerial-type map of Isanotski volcano (scale of 20-40 km)
Terrain-type map of Isanotski volcano (scale of 20-40 km)
Satellite/aerial-type map of Isanotski volcano (scale of approx. 10-20 km)
Terrain-type map of Isanotski volcano (scale of approx. 10-20 km)
Satellite/aerial-type map of Isanotski volcano (scale of 5-10 km)
Satellite/aerial-type map of Isanotski volcano (scale of few kilometers)
