FVXX20 KWBC 300300 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0300 UTC 30 JAN 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-004 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: SIGMET FROM MEXICO CITY MWO...GOES-8 INFRARED AND MULTISPECTRAL IMAGERY....0000 UTC SOUNDING FROM MEXICO CITY AND 0000 UTC GOES-8 & -10 HIGH DENSITY WINDS. . ERUPTION DETAILS: THE MEXICO CITY METEOROLOGICAL WATCH OFFICE REPORTS AN EXHALATION OF STEAM AND ASH UP TO FL290 AT 29/2015 UTC. THE STEAM AND ASH WAS REPORTED MOVING NORTHEAST. . DETAILS OF ASH CLOUD: NO ASH CLOUD IS VISIBLE IN SATELLITE IMAGERY THROUGH 30/0232 UTC. . TRAJECTORY: ANY REMAINING ASH WOULD MOVE TO THE NORTHEAST AT 20-30 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 AND VAFTAD. . THIS WILL BE THE LAST MESSAGE FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN