Volcano Update from Archive



Another phase of vigorous ash eruption at Redoubt Volcano began at 7:41 pm (AKDT). AVO remains at Aviation Color Code RED and Alert Level WARNING.

The top of the ash cloud is estimated to be at least 50,000 ft above sea level based on NWS radar. Winds in the vicinity of the volcano vary with altitude and are expected to carry the ash cloud primarily to the west and north. Seismicity has declined somewhat since the start of the event but remains elevated.

AVO remains staffed 24 hours per day will issue further information as it becomes available.

For up-to-date Ashfall Advisories and wind trajectories, please refer to the National Weather Service website: http://pafc.arh.noaa.gov/volcano.php
Ash fall can be expected in the vicinity and downwind of the volcano. Winds in the vicinity of the volcano vary with altitude and are expected to carry the ash cloud primarily to the west and north. Pyroclastic flows have observed in the AVO web camera descending the north flank of the volcano and extending along the east side of the Drift Glacier piedmont lobe. Pyroclastic flows may also be affecting other drainages on the volcano. Mudflows are occurring in the Drift River drainage. These fast moving flows of volcanic debris and water may reach Cook Inlet within several hours. Other drainages on the volcano may also experience mudflows.NWS radar indicates the volcanic cloud has reached 50,000 ft. Ash fall can be expected in the vicinity and downwind of the volcano. Winds in the vicinity of the volcano vary with altitude and are expected to carry the ash cloud primarily to the west and north. Pyroclastic flows have observed in the AVO web camera descending the north flank of the volcano and extending along the east side of the Drift Glacier piedmont lobe. Pyroclastic flows may also be affecting other drainages on the volcano. Mudflows are occurring in the Drift River drainage. These fast moving flows of volcanic debris and water may reach Cook Inlet within several hours. Other drainages on the volcano may also experience mudflows.NWS radar indicates the volcanic cloud has reached 50,000 ft.