FVXX21 KWBC 172200 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2200 UTC 17 MAR 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-023 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. MWO REPORT. CENEPRED REMOTE CAMERA. . ERUPTION DETAILS: MINOR ERUPTIONS OCCURRED BETWEEN 17/1500-17/1600 . DETAILS OF ASH CLOUD: GOES 8 IMAGERY THROUGH 2145 UTC DOES INDICATE ANY ASH FROM THE EARLIER ERUPTION. . TRAJECTORY: 1200 UTC MEXICO CITY SOUNDING WOULD TAKE ANY ASH UP TO FL200 TO THE EAST NORTHEAST AT 25 KTS. . 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 WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN