FVXX21 KWBC 131530 VOLCANIC ASH ADVISORY ISSUED 1530 UTC 13 JUN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-692 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. WIND FORECAST FROM THE AVIATION MODEL. GEOPHYSICAL INSTITUTE REPORT. SIGMETS FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS. . DETAILS OF ASH: THE GEOPHYSICAL INSTITUTE REPORTS THAT 8 EXPLOSIONS HAVE OCCURRED THIS MORNING. THE LATEST OCCURRED AROUND 15 UTC AND THE ASSOCIATED ASH WAS REPORTED MOVING WEST NORTHWEST AND ESTIMATED TO FL260. NO DEFINITIVE AREAS OF ASH CAN BE SEEN ON SATELLITE IMAGERY THROUGH 13/1445 UTC POSSIBLY DUE TO THE LOW LEVEL CLOUDS THROUGHOUT THE AREA. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL260 WOULD MOVE TOWARD THE WEST AT ABOUT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 13/2130 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. . CLARK . NNNN