FVXX21 KWBC 162000 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2000 UTC 16 MAR 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-021 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY UPPER AIR SOUNDING . ERUPTION DETAILS: MINOR ERUPTION OCCURRED AROUND 16/1300 UTC. . DETAILS OF ASH CLOUD: ASH FROM THE EARLIER ERUPTION IS NO LONGER VISIBLE IN GOES-8 IMAGERY. TRAJECTORY: EAST AT 20-25 KT. . 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/messages.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS. . THIS IS THE LAST STATEMENT IN THIS EVENT. PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN