FVXX23 KWBC 050015 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0015 UTC 05 NOV 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-103 MEXICO 19.0N 98.6W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE AND MULTISPECTRAL SATELLITE IMAGERY..MEXICO CITY METEOROLOGICAL WATCH OFFICE AND THE 04/1200 UTC UPPER AIR SOUNDING. . ERUPTION DETAILS: ERUPTION OCCURRED AT 04/1711 UTC. . DETAILS OF ASH CLOUD: ASH IS NO LONGER VISIBLE ON SATELLITE IMAGERY THROUGH 04/2332 UTC. TRAJECTORY: ANY REMAINING ASH BETWEEN FL190 AND FL240 WILL MOVE WESTERLY AROUND 10 KNOTS. REMAINING ASH AT FL280 TO FL300 WILL MOVE TO THE NORTHEAST AT 20 KNOTS. . 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/) . OUTLOOK: SEE SIGMETS AND VAFTAD. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . WALTER/SAB/NOAA/NESDIS . NNNN