FVXX21 KWBC 180630
VOLCANIC ASH ADVISORY  
ISSUED 0630 UTC 18 JUN 2000 BY THE WASHINGTON VAAC 
. 
TUNGURAHUA 00-711         ECUADOR 0128S 7826W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY. WIND FORECAST FROM AVIATION MODEL.
.
ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.  
.
DETAILS OF ASH: SATELLITE IMAGERY THROUGH 18/0545 UTC SHOWS
EXTENSIVE CLOUDINESS OVER THE VOLCANO MAKING ANY DETECTION OF
ASH DIFFICULT. THE LATEST REPORT FROM THE GEOPHYSICAL
INSTITUTE AT 18/0310 UTC REPORTED ASH OVER THE VOLCANO AT
FL250.

TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH FROM THE
SUMMIT TO FL250 WOULD MOVE TOWARD THE WEST AT 15 TO 20 KNOTS.
.
OUTLOOK: SEE SIGMETS.
.
THE NEXT MESSAGE WILL BE ISSUED BY 18/1230 UTC.
.
REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORIES 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/)
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.

NNNN