Alaska Preparedness, Volcano Observatory

[Gale]

Redoubt Volcano watch has gone to orange.
Alaska Volcano Observatory (http://www.avo.alaska.edu/activity/Redoubt.php)




Scientists with the Alaska Volcano Observatory on Friday flew close to Drift Glacier and spotted vigorous steam emitted from a hole on the mountain. By Saturday, they had confirmed the area was a fumarole, an opening in the earth that emits gases and steam, that was increasing in size at an alarming rate...The warning that an eruption was imminent caused a rush on dust masks and car air filters in Anchorage.
Scientist see holes in glacier at Alaska volcano (http://www.google.com/hostednews/ap/article/ALeqM5hcWJaxwgurm_TV9AVcObQBWbS25QD962JVUO0)

[Swami Salami]

[Gary]

Mount Redoubt is a 10,197-foot-stratovolcano in Alaska's Lake Clark National Park
and Preserve Chigmit Mountains. Mt. Redoubt erupted in 1902, 1966 and 1989. The eruption in 1989 spewed volcanic ash to a height of 14,000 meters (45,000 ft) and managed to catch KLM Royal Dutch Airlines flight 867, a Boeing 747 aircraft, in its plume (the flight landed safely at Anchorage). For five months, the ash disrupted international air traffic and dusted the Anchorage region over an area of 20,000 square kilometers (7,700 sq. miles). The 1989 eruption was the first ever volcanic
eruption to be successfully predicted in a long-period seismic events method developed

From Earthfiles.

[zorgon]

April 21, 1990



Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater. Photograph by R. Clucas, April 21, 1990.

[Gale]

April 1990, that explains why I didn't remember it, I was pregnant with my first child to the shock of my entire family.
I guess I was in shock too, no j/k.
I know the dust cloud from Mount St Helen's made it to Florida when I was there so this dust would be a major concern for Anchorage.
Volcano Hazards Program Site (http://volcanoes.usgs.gov/ash/)

[zorgon]

We had dust for three days in Toronto...

Spectroscopic measurements in Toronto indicate that a fraction of Mt. St. Helens volcanic eruption cloud of 18 May reached Southern Ontario at about 1800 GMT, 20 May and drifted over this area until nearly 0000 GMT, 22 May. These measurements complement other observations (Ryznar et al., 1981; Draxler, 1981).

[Gale]

Alaska's Redoubt volcano erupts, more may follow (http://ca.news.yahoo.com/s/reuters/090323/us/usreport_us_volcano_alaska_3)


Alaska's Mount Redoubt volcano erupted with a burst of ash that rose more than 9 miles , and more eruptions are expected.

The first blast occurred at 10:38 p.m. Pacific time on Sunday (0538 GMT Monday), the Alaska Volcano Observatory said, followed by four smaller eruptions.

The 10,197-foot (3,108-meter) volcano, located 106 miles southwest of Anchorage, Alaska's largest city, had been showing signs of a possible eruption for about two months. So far Anchorage has been untouched by harmful volcanic ash.

[Heretic]

for those monitoring Redoubt

http://volcanoes.usgs.gov/avo/webcam/redoubt.jpg