FVXX20 KWBC 131600 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1600 UTC 13 MAR 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-029 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: METEOROLOGICAL WATCH OFFICE IN MEXICO CITY...GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. CENAPRED. . ERUPTION DETAILS: EMISSION AT APPROX 13/0318 UTC. . DETAILS OF ASH CLOUD: NO ASH HAS BEEN DETECTED IN GOES IMAGERY SINCE AROUND 0600 UTC. FOR THE PAST SEVERAL HOURS A HOT SPOT HAS BEEN NOTED AT THE VOLCANO HOWEVER LOOKING AT THE CENAPRED CAMERA POINTED AT THE SUMMIT ONLY A FAINT VAPOR CLOUD AND NO ASH CLOUD HAS SEEN. WE WILL CONTINUE TO MONITOR THE VOLCANO SINCE POPOCATEPETL HAS BEEN PRODUCING SMALL EMISSIONS FOR THE PAST SEVERAL DAYS. . TRAJECTORY: N/A. . 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 STATEMENT UNTIL ASH IS AGAIN REPORTED OR DETECTED. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN