FVXX20 KWBC 300930 VOLCANIC ASH ADVISORY ISSUED 0930 UTC 30 OCT 2000 BY THE WASHINGTON VAAC . POPOCATEPETL 00-099 MEXICO 1901N 9837W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE. MEXICO CITY UPPER AIR SOUNDING. . ERUPTION DETAILS: ASH EXHALATION AT 29/2315 UTC. . DETAILS OF ASH CLOUD: ASH WAS NO LONGER DISCERNIBLE ON CHAN4- CHAN5 MULTISPECTRAL SATELLITE IMAGERY THROUGH 30/0845 UTC. HOWEVER THERE CONTINUES TO BE AN ENHANCED AREA OF POSSIBLE FAINT ASH IN PCI IMAGERY. AT 30/0845 UTC THIS AREA WAS LOCATED ABOUT 140 KM (76 NMI) TO THE NORTHWEST OF THE SUMMIT AND WAS ABOUT 113 KM (61 NMI) WIDE. IN ADDITION A HOT SPOT AT THE SUMMIT WAS DETECTED IN RECENT IMAGERY. THE MEXICO CITY MWO ESTIMATED THE HEIGHT OF THE ASH TO FL280 AT THE TIME OF THE ERUPTION. . TRAJECTORY: ANY ASH FROM SUMMIT LEVEL TO FL280 WOULD MOVE TOWARD THE NORTH AT ABOUT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BEFORE 30/1530 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. . CLARK . NNNN