FVXX21 KWBC 190630 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0630 UTC 19 MAY 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-586 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MAY 18 GEOPHYSICAL INSTITUTE REPORT. WIND FORECAST FROM THE AVIATION MODEL. SIGMET FROM THE GUAYAQUIL METEOROLOGICAL WATCH OFFICE. . ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH EMISSIONS. . DETAILS OF ASH: VISIBLE SATELLITE IMAGERY AT 18/2215 UTC SHOWED A NARROW ASH PLUME EXTENDING FROM THE SUMMIT TOWARD THE WEST. HOWEVER DUE TO INCREASING WEATHER CLOUDS ASH CAN NO LONGER BE DETECTED IN SATELLITE IMAGERY THROUGH 19/0545 UTC. THE MOST RECENT AVAILABLE ASH HEIGHT DETERMINATION WAS AN 18/1503 UTC OBSERVATION BY THE GEOPHYSICAL INSTITUTE OF PROBABLE ASH TO FL260. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL260 WOULD MOVE TOWARD THE WEST AT ABOUT 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 19/1230 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