Redoubt volcano:
Aviation Color Code – RED
Volcano Alert Level – WARNING
On 2009-03-23 at 02:04:08 (10:04:08UTC) AVO said:
As of 2:00AM March 23, 2009, AVO has recorded FOUR large explosions at Redoubt volcano at the following times:
- March 22 10:38PM
- March 22 11:02PM
- March 23 12:14AM
- March 23 01:39AM
[Add 8 hrs to get time in UTC]
The National Weather Service has issued an Ashfall Advisory. Link: http://pafc.arh.noaa.gov/volcano.php
Crater showing rapidly melting glacier and enlarged “ice piston” feature. Picture Date: March 21, 2009. Image Creator: Cyrus Read. Image courtesy of AVO/USGS.
Top vent in the Redoubt summit crater. Picture Date: March 21, 2009. Image Creator: Cyrus Read. Image courtesy of AVO/USGS.
Looking south at the north flank of Redoubt volcano. Ashfall limited to south crater floor, rim, and extending south-southeast. Source of ash is a vent south of the 1990 dome at an elevation of ~8300 ft. (~2, 530m). Picture Date: March 15, 2009 – Image Creator: Heather Bleick. Image courtesy of AVO/USGS.
AVO/USGS Volcanic Activity Notice
- Volcano: Redoubt (CAVW #1103-03-)
- Current Volcano Alert Level: WARNING
- Current Aviation Color Code: RED
Issued: Sunday, March 22, 2009, 11:26 PM AKDT (20090322/0726Z)
Source: Alaska Volcano Observatory (AVO)
Notice Number: 2009/A12
Location: N 60 deg 29 min W 152 deg 44 min
Elevation: 10197 ft (3,108 m)
Area: Cook Inlet-South Central Alaska
Volcanic Activity Summary: The eruption of Mt. Redoubt continues. The height of the eruption cloud is estimated to be 50,000 ft above sea level. Further reports will be issued as more information becomes available.
Recent Observations:
[Volcanic cloud height] The height of the eruption cloud is estimated to be 50,000 ft above sea level. Further reports will be issued as more information becomes available.
[Other volcanic cloud information] Nil
[Mudflow] Mudflows are possible on Drift and Crescent Rivers.
[Ash fall] Ashfall likely in the vicinity of and downwind from the volcano.
Location of Redoubt volcano, in relationship to surrounding towns, roads, and other volcanoes. Image Date: September 26, 2008. Image Creator: Janet Schaefer. Image courtesy of the AVO/ADGGS.
Contacts: Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131
Mount Redoubt rises to 3108 m on the west side of Cook Inlet, 170 km SW of Anchorage. Redoubt volcano was constructed over a basement of glacially eroded Mesozoic granitic rocks, seen here in the foreground. The volcano has been very active during the Holocene, producing at least 30 tephra layers in the Cook Inlet basin stratigraphy. A steam plume rises from the summit crater, which is breached to the north, in this view from the NW following its 1989-90 eruption. Iliamna volcano is visible in the left distance. Photo by Christina Neal (U.S. Geological Survey, Alaska Volcano Observatory). Caption GVP.
Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu
The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
- Alaska Aviation Weather Unit (AAWU) – SIGMETS
- Center Weather Service Unit (CWSU)
- Alaska Volcano Observatory (AVO)
- Air Resources Laboratory (ARL) – Alaska Volcano Forecast Trajectories
- State of Alaska Air Quality Advisories and Alerts
URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE ANCHORAGE AK
240 AM AKDT MON MAR 23 2009
SUSITNA VALLEY-
INCLUDING THE CITIES OF, TALKEETNA, WILLOW, CANTWELL
THE ASHFALL ADVISORY IS NOW IN EFFECT UNTIL 8 AM AKDT THIS
MORNING.
REDOUBT VOLCANO AT 60.5N 152.7W HAS ERUPTED SEVERAL TIMES DURING
THE NIGHT. LIGHT ASHFALL HAS ALREADY BEEN REPORTED AT SKWENTNA.
LIGHT ASHFALL IS POSSIBLE THROUGHOUT THE SUSITNA VALLEY THIS
MORNING.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
AN ASHFALL ADVISORY MEANS THAT ASH WILL BE DEPOSITED IN THE
ADVISORY AREA. PEOPLE IN AREAS OF ASHFALL SHOULD SEAL WINDOWS AND
DOORS. PROTECT ELECTRONICS AND COVER AIR INTAKES AND OPEN WATER
SUPPLIES. MINIMIZE DRIVING. LISTEN TO YOUR RADIO STATION FOR
FURTHER INFORMATION.
Redoubt Ashfall – Current trajectory model. NOAA/NWS FO
Webcam image – dated March 15, 2009. AVO/USGS
Live webcam images of various Alaskan volcanoes
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