2/03/09 Update From the AVO:
Seismic activity at Redoubt is continuing at an elevated level and is well above background levels. The volcano has not erupted.
A gas/observation overflight yesterday reported continued changes in the summit glaciers indicative of heating of the summit area. Photos from both the overflight and the hut webcam showed a small vapor plume at the summit. The web camera is now dark as our long winter night continues.
Click for High Resolution Image
According to the Alaska Volcano Observatory, Mt.Redoubt has had 11 past eruptions. The past eruptions were in the years of 1778, 1819, 1881, 1902, 1933, 1965, 1966, 1989, 1992, 2003 and last but not least the present 2009. This current period of unrest started on 1/25/09 with the following information:
AVO raised the Aviation Color Code to ORANGE and the Alert Level to WATCH at 02:09 AST (11:09 UTC) the morning of Sunday, January 25, in response to a sharp increase of seismic activity beneath the volcano. AVO had raised the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY on November 5, 2008, in response to increased emissions of volcanic gases; melting of snow and ice near the volcano’s summit; and a subtle increase in seismicity.
Here is the latest from the AP on Redoubt’s activity.
Groans and steam emanated from Mount Redoubt yet another day, but the volcano showed no dramatic burst of energy, geologists noted Sunday.
“It looks like a volcano that wants to erupt, and our general impression is that it’s more likely to erupt than not,” said Tina Neal with the Alaska Volcano Observatory.
As a precaution, Elmendorf Air Force Base near Anchorage, about 100 miles northeast of Redoubt, was moving five C-17 cargo planes to McChord Air Force Base in Washington.
“We’re just trying to be proactive and protect our assets,” said 1st Lt. Erin Slaughter. “Our aircraft support other missions, such as delivering supplies to Iraq and Afghanistan, and this relocation will allow them to still do all those missions even if the volcano does erupt.”
On Saturday, geologists observed a quickly growing area of vigorous steaming at the 7,100-foot level on the north side of the mountain. Volcanic gas also was detected.
A hole in a glacier clinging to the north side of the volcano had doubled in size since Friday, spanning the length of two football fields.
The area is just below a dome that formed the last time Redoubt blew in 1990.
Complete article here.
More links of interest….for Mt. Redoubt:
View the AVO Webicorders (seismic readings) and watch the activity.