FVXX21 KWBC 310245 VOLCANIC ASH ADVISORY ISSUED: 2000DEC31/0245Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2000/216 . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE. 0000Z MEXICO CITY UPPER AIR SOUNDING. . ERUPTION DETAILS: POSSIBLE ERUPTION AT 31/0155Z . DETAILS OF ASH CLOUD: THE MEXICO CITY MWO INDICATED THAT A POSSIBLE ERUPTION OCCURRED AT 0155Z TO FL280 BASED ON A PILOT REPORT. SATELLITE IMAGERY THROUGH 0215Z SHOWED EXTENSIVE CLOUD COVER OVER THE SUMMIT AND THE SURROUNDING AREA WHICH PRECLUDED THE DETECTION OF ANY ASH. . TRAJECTORY: ANY ASH TO FL280 WOULD MOVE TOWARDS THE EAST AT 40 TO 45 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 31/0900Z. . 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. . TURK . NNNN