FVXX21 KWBC 041935 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1935 UTC 04 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-400 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. UPPER WIND FORECAST FROM THE 1200 UTC AVIATION MODEL. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 04/1845 UTC. CLOUDS HAVE BROKEN UP ALLOWING SOME CLEAR SPOTS AROUND THE VOLCANO IN THE PAST 1 TO 2 HOURS BUT EXTENSIVE CLOUDS COVERED THE REGION EARLIER IN THE DAY. THE LAST CONFIRMED REPORT OF ASH WAS TO FL230 AROUND 0000 UTC ON 3 APRIL. . TRAJECTORY: UPPER AIR PATTERNS FROM THE AVIATION MODEL SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL230 WOULD MOVE TOWARD THE SOUTHWEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 05/0130 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. . RUMINSKI . NNNN