FVXX23 KWBC 122330 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 2330 UTC 12 NOV 1999 BY THE WASHINGTON VAAC . COLIMA 99-065 MEXICO 19.51N 103.62W . BACKGROUND: COLIMA MEXICO (1401-04) SUMMIT HEIGHT 13451 FT (4100 M) . SOURCES OF INFORMATION: MEXICO CITY METEOROLOGICAL WATCH OFFICE...COLIMA TOWER...GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL SATELLITE IMAGERY...12 UTC GUADALAJARA UPPER AIR SOUNDING. . ERUPTION DETAILS: ERUPTION OCCURRED AT 12/1637 UTC. . DETAILS OF ASH CLOUD: NO ASH COULD BE DETECTED IN GOES-8 IMAGERY THROUGH 2245 UTC. THERE ARE CONVECTIVE CLOUDS IN THE IMMEDIATE AREA MAKING ANY DETECTION OF ASH VERY DIFFICULT. MEXICO CITY MWO HAS NOT RECEIVED ANY MORE REPORTS OF ASH. . TRAJECTORY: UPPER AIR PATTERNS INDICATE THAT ANY ASH BELOW FL170 WOULD MOVE TO THE WEST OR NORTHWEST AT 5 TO 15 KNOTS. . 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 http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE LAST STATEMENT ISSUED FOR THIS EVENT. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . HUGHES - NOAA/NESDIS/SAB . NNNN