FVXX20 KWBC 300100 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 0100 UTC 30 JULY 1999 BY THE WASHINGTON VAAC . COLIMA 99-045 MEXICO 19.51N 103.62W . BACKGROUND: COLIMA MEXICO (1401-04) SUMMIT HEIGHT 13451 FT (4100M) . SOURCES OF INFORMATION: GOES8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE COORDINATION MEXICO CITY SIGMET 30/00 UTC MEXICO CITY SOUNDING ERUPTION DETAILS: ERUPTION OCCURRED AT 29/2258 UTC TO FL350. . DETAILS OF ASH CLOUD: NO ASH IS DETECTABLE IN SATELLITE IMAGERY BUT THERE IS VERY EXTENSIVE METEOROLOGICAL CLOUDS IN THE AREA. MEXICO CITY MWO REPORTS ASH EXTENDING 40 NMI S AND SW FROM SUMMIT. THE 00 UTC MEXICO CITY SOUNDING WOULD SPACE THE SPEED AT 10-15 KT. TRAJECTORY: SOUTH TO SOUTHWEST AT ABOUT 10-15 KT. . 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. . THE NEXT MESSAGE WILL BE ISSUED BY 30/0700 UTC OR SOONER IF NEW INFORMATION BECOMES AVAILABLE. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN