FVXX21 KWBC 020500 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0500 UTC 02 FEB 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-133 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL SATELLITE IMAGERY...1800 UTC AVIATION MODEL WIND FORECAST...VAFTAD . ERUPTION DETAILS: INTERMITTENT ERUPTIONS. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 02/0415 UTC PROBABLY BECAUSE OF THE EXTENSIVE LOW AND MID LEVEL WEATHER CLOUDS IN THE AREA. SIX HOURS AGO THROUGH A BREAK IN THE CLOUDS AN ASH PLUME COULD BE SEEN IN VISIBLE SATELLITE IMAGERY. THAT PLUME EXTENDED FROM THE SUMMIT TOWARD THE WEST NORTHWEST AND AT ABOUT THE SAME TIME A PILOT REPORTED ASH AT FL230. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL230 WOULD MOVE TOWARD THE WEST AT 25 TO 30 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . NEXT MESSAGE WILL BE ISSUED BY 02/1100 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. . NNNN