FVXX21 KWBC 031700 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1700 UTC 03 SEPTEMBER 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-096 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..AND CENAPRED VOLCANO CAM. . ERUPTION DETAILS: ERUPTION AT 03/1605 UTC. . DETAILS OF ASH CLOUD: METEOROLOGICAL WATCH OFFICE FROM MEXICO CITY REPORTS THAT THE VOLCANO ERUPTED AT 03/1605 UTC TO FL350. MULTISPECTRAL IMAGERY AT 03/1632 UTC SHOWS A SMALL PUFF OF ASH APPROXIMATELY 20 KM TO THE WEST-SOUTHWEST OF THE SUMMIT. THE CENAPRED VOLCANO CAM SHOWS THE AREA CURRENTLY SHROUDED IN CLOUDS. THE CURRENT UPPER AIR SOUNDING FROM MEXICO CITY IS MISSING HOWEVER ANIMATED GOES-8 SATELLITE IMAGERY SHOWS THE ASH MOVING TOWARD THE WEST-SOUTHWEST AT 20 KTS. . TRAJECTORY: WEST-SOUTHWEST 20 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 AND VAFTAD. . NEXT MESSAGE WILL BE ISSUED AT 03/2300 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN