(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:(20090324/0414Z)
(3) Volcano:Redoubt (CAVW# 1103-03-)
(4) Current Color Code:RED
(5) Previous Color Code:
(6) Source:Alaska Volcano Observatory
(7) Notice Number:2009/A13
(8) Volcano Location:N 60 deg 29 min W 152 deg 44 min
(9) Area:Cook Inlet-South Central Alaska
(10) Summit Elevation:10197 ft (3108 m)
(11) Volcanic Activity Summary: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
(12) Volcanic cloud height:Unknown
(13) Other volcanic cloud information:Unknown
(14) 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
(15) Next Notice:A new VONA will be issued if conditions change significantly or alert levels are modified. While a VONA is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu