Mount Redoubt west of Kenai erupts an ash cloud on April 21, 1990, during the same unrest that launched the fledgling Alaska Volcano Observatory.

Plume heights were observed at or above 60,000 feet during two of the six significant eruptions. Mount Redoubt Volcano In Alaska Erupts Explosively Date: March 23, 2009 Source: U.S. Geological Survey Summary: Alaska's Mount Redoubt Volcano has erupted, spewing ash thousands of feet into the air.
It is about 100 miles (160 km) from the city of Anchorage.. On March 22, 2009, Mount Redoubt erupted, sending ash high in the air and covering the mountains around with ash. It’s … Eruptions. At the time, the eruption was one of the costliest eruptions in U.S. history, said Joel Hard, superintendent of Lake Clark National Park and Preserve. Four additional encounters between jet aircraft and Redoubt ash clouds occurred in the Anchorage area on December 15 and 16, 1989, and February 21, 1990; none resulted in engine failure. The eruption in 1989 spewed volcanic ash to a height of 45,000 ft (14,000 m). It last erupted in 1989 and 1990, sending a plume of ash into the atmosphere large enough to interfere with air traffic. The ash cooled, coating the engines with glass and restricting air flow. It caught KLM Flight 867, a Boeing 747 aircraft, in its plume. Redoubt is also one of the most active of the Cook Inlet volcanoes. Redoubt has erupted: Crossptach at 9:41pm. Mount Redoubt is an active volcano, having erupted several times in the past century or so. Two additional encounters took place on December 17, 1989 when jet airliners encountered the Redoubt … Eruptions Mount Redoubt is an active volcano, having erupted several times in the past century or so. On March 22, 2009, Mount Redoubt volcano, 106 miles southwest of Anchorage, Alaska, began a series of eruptions after persisting in Orange or “Watch” status since late January 2009.

Looking at this Redoubt webicorder it looks like an eruption of some sort might have started at around 2045UTC. Mount Redoubt, also called Redoubt Volcano, is a volcano in the U.S. state of Alaska.It rises 10,197 feet (3,108 m) above sea level and 9,147 feet (2,788 m) above the valleys around it. On that December morning 30 years ago, volcanic ash from Mount Redoubt melted inside all four jet engines of that 747. Redoubt reported activity, including all types of volcanic activity. Active for millennia, Mount Redoubt has erupted four times since it was first observed: in 1902, 1966, 1989 and 2009, with two questionable eruptions in 1881 and 1933. As first noticed by WUWT commenter Crosspatch last night, from seismic data, it appears Mt.

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