FVXX21 KWBC 270130
.
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0130 UTC 27 NOV 1999 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 99-172        ECUADOR 1.47S 78.44W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL AND INFRARED IMAGERY. 
REPORT FROM THE GEOFISICO INSTITUTO.
.
ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS
.
DETAILS OF ASH: THE PLUME PREVIOUSLY SEEN IN IMAGERY BECAME OBSCURED
BY CLOUDS.  AT 26/2215 UTC A BRIEF HOT SPOT WAS NOTED AT THE VOLCANO
HOWEVER NO ASH CLOUD WAS DETECTED. THE INSTITUTO REPORTS THAT THE
VOLCANO HAS AN ALMOST PERMANENT PLUME OF GASES AND A LITTLE ASH THAT
REACHES AROUND 1KM (3,500FT) ABOVE THE SUMMIT OR TO AROUND FL200. 
.
TRAJECTORY: UPPER AIR PATTERNS OVER THE VOLCANO ARE QUITE VARIABLE
AND ANY ASH MOVEMENT WILL BE DIFFUSE. 
.
REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH
ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH
LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
.
OUTLOOK:  SEE SIGMETS AND VAFTAD.
.
THE NEXT STATEMENT WILL BE ISSUED BY 27/0730 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN