FVXX20 KWBC 112130 VOLCANIC ASH ADVISORY ISSUED 2130 UTC 11 NOV 2000 BY THE WASHINGTON VAAC . POPOCATEPETL 00-113 MEXICO 1901N 9837W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE. AVIATION FORECAST MODEL. ERUPTION DETAILS: ASH EXHALATIONS AT 1445 AND 1948 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY SHOWS THAT THE ASH PLUME DETECTED EARLIER AT 1445 UTC DISSIPATED. THE MEXICO CITY METEOROLOGICAL WATCH OFFICE REPORTS ANOTHER EXHALATION OF POPO TO FL200. THE ASH IS REPORTED TO BE MOVING TOWARDS THE WEST AT 10 KTS. THIS LATEST ASH IS TOO THIN TO BE DETECTED IN CURRENT SATELLITE IMAGERY. . TRAJECTORY: UPPER AIR WINDS ARE LIGHT AND VARIABLE UP TO FL200. THEREFORE FORECAST MOVEMENT IS DIFFICULT. HOWEVER THE LATEST VAFTAD SUGGESTS THE ASH MIGHT MOVE TO THE SOUTH AT LESS THAN 10 KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT ADVISORY WILL BE ISSUED BY 12/0330 UTC. . REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES 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/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . KARST . NNNN