| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | (20090404/1451Z) |
| (3) Volcano: | Redoubt (CAVW# 1103-03-) |
| (4) Current Color Code: | RED |
| (5) Previous Color Code: | |
| (6) Source: | Alaska Volcano Observatory |
| (7) Notice Number: | 2009/A33 |
| (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: | CORRECTION OF ALERT LEVEL TO WARNING. Another significant explosive event occurred at Redoubt Volcano at approximately 5:58 am AKDT (13:58 UTC). At this time, the cloud height is estimated to be 50,000 feet based on National Weather Service radar. The cloud is drifting to the southeast of the volcano. AVO seismometers indicate a lahar has developed in the Drift River Valley. |
| (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 |
