FVXX21 KWBC 201915 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1915 UTC 20 SEPTEMBER 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-093 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. . ERUPTION DETAILS: ERUPTION AT 20/1258 UTC. . DETAILS OF ASH CLOUD: GOES 8 VISIBLE AND MULTI SPECTRAL IMAGERY THRU 1855 UTC DOES NOT SHOW ANY ASH BEING EMITTED FROM THE VOLCANO. THE METEOROLOGICAL WATCH OFFICE FROM MEXICO CITY REPORTS OCCASIONAL STEAM BUT NO ASH BEING EMITTED AT THIS TIME. THERE IS NO EVIDENCE OF ASH IN THE VICINITY OF THE VOLCANO FROM THE EARLIER ERUPTION. . TRAJECTORY: N/A . 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. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN