FVXX21 KWBC 291500 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1500 UTC 29 SEPTEMBER 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-094 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: MEXICO CITY MWO...GOES 8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY..CENAPRED VOLCANO CAM AND MEXICO CITY UPPER AIR SOUNDING. . ERUPTION DETAILS: ERUPTION AT 29/1425 UTC. . DETAILS OF ASH CLOUD: METEOROLOGICAL WATCH OFFICE FROM MEXICO CITY REPORTS THAT CENAPRED IS REPORTING AN ERUPTION OF THE VOLCANO WITH ASH BETWEEN FL180-FL250. GOES-8 SATELLITE IMAGERY AND THE CENAPRED VOLCANO CAM BOTH SHOW EXTENSIVE CLOUDINESS OVER THE VOLCANO THEREFORE NO ASH IS VISIBLE AT THIS TIME. . TRAJECTORY: WEST-SOUTHWEST 25-30 KTS. . 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 www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE LATEST SIGMETS. . NEXT MESSAGE WILL BE ISSUED AT 29/2100 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN