FVXX21 KWBC 090815
.
VOLCANIC ASH ADVISORY
ISSUED 0815 UTC 09 NOVEMBER 1999 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 99-095    ECUADOR 1.47S 78.44W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY...GUAYAQUIL METEOROLOGICAL WATCH OFFICE...00 UTC AVIATION
NUMERICAL WEATHER MODEL WIND DATA...REPORT OF THE INSTITUTO
GEOFISICO 
.
ERUPTION DETAILS:  SATELLITE IMAGERY HAS SHOWN INTERMITTENT ASH
EMISSIONS WITH THE MOST RECENT VISIBLE EMISSION OCCURRING AT ABOUT
09/0100 UTC. 
.
DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH
09/0745 UTC.  THE ASH OBSERVED EARLIER AND ESTIMATED TO BE BETWEEN
FL140 AND FL320 IS NOW TOO DIFFUSE TO OBSERVE IN IMAGERY.
. 
TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN FL220
AND FL320 WOULD MOVE TOWARD THE EAST AT ABOUT 20 KNOTS.  ASH BETWEEN
FL140 AND FL210 WOULD MOVE TOWARD THE SOUTH OR SOUTHEAST AT ABOUT 15
KNOTS.
.
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 09/1415 UTC.
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
NNNN