FVXX21 KWBC 281830
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1830 UTC 28 APR 2000 BY THE WASHINGTON VAAC 
.
TUNGURAHUA 00-499         ECUADOR 0128S 7826W 
.
BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
.
SOURCES OF INFORMATION: GOES-8 VISIBLE..INFRARED AND
MULTISPECTRAL IMAGERY. GEOPHYSICAL INSTITUTE.  6 HOUR FORECAST
FROM THE 28/1200 UTC AVIATION MODEL.
.
ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.   
.
DETAILS OF ASH: SATELLITE IMAGERY THROUGH 28/1745 UTC SHOWS
EXTENSIVE CLOUDS OVER THE AREA MAKING DETECTION OF ASH
DIFFICULT.  THE GEOPHYSICAL INSTITUTE HOWEVER DID REPORT ASH
OVER THE SUMMIT MOVING WEST AT 28/1631 UTC WITH NO GIVEN
HEIGHT.
.
TRAJECTORY: ASH TO FL250 WOULD MOVE TOWARDS THE WEST AT 20
KNOTS.
.
OUTLOOK: SEE SIGMETS AND VAFTAD.
.
THE NEXT STATEMENT WILL BE ISSUED BY 29/0030 UTC.
.
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/)
.
PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
.
WALTER
.
NNNN