Bogosolf Volcano Eruption


Technical Administrator
Staff member
Sustaining Member
Technical Admin
Reaction score
Hartselle, al
HAM Callsign
Volcano: Bogoslof (VNUM #311300)

Current Volcano Alert Level: WARNING
Previous Volcano Alert Level: WATCH

Current Aviation Color Code: RED
Previous Aviation Color Code: ORANGE

Issued: Monday, August 7, 2017, 10:53 AM AKDT
Source: Alaska Volcano Observatory
Notice Number:
Location: N 53 deg 55 min W 168 deg 2 min
Elevation: 492 ft (150 m)
Area: Aleutians

Volcanic Activity Summary: A significant explosive eruption began at Bogoslof volcano at about 18:00 UTC (10:00 AKDT) on August 7 and is continuing. A pilot report at 18:45 UTC indicates that the ash cloud had reached 32,000 ft asl. Thus, AVO is raising the Aviation Color Code to RED and Alert level to WARNING for Bogoslof volcano.

Winds are currently to the south. Seismic and infrasound data suggest that the ash emissions are continuing.

Recent Observations:
[Volcanic cloud height] 32,000 ft asl estimated by pilot report
[Other volcanic cloud information] Cloud moving towards south

Hazard Analysis:
[Ashfall] None expected OR Trace of ash fallout in Unalaska possible