FVXX20 KWBC 210800 VOLCANIC ASH ADVISORY ISSUED: 2000DEC21/0800Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2000/204 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. SIX HOUR WIND FORECAST FROM THE 21/0000Z AVIATION FORECAST. . ERUPTION DETAILS: INTERMITTENT EMISSIONS OF MOSTLY STEAM . DETAILS OF ASH CLOUD: ASH LAST SEEN OVER THE NORTHERN YUCATAN PENINSULA IS NO LONGER VISIBLE IN THE SATELLITE IMAGERY THROUGH 21/0715Z. IN ADDITION NO ASH IS SEEN NEAR OR AROUND THE VOLCANO HOWEVER A WELL DEFINED HOTSPOT IS DETECTED ON THE MULTISPECTRAL IMAGERY. . TRAJECTORY: ANY REMAINING ASH OVER THE YUCATAN PENINSULA AT FL32O WOULD MOVE TOWARDS THE NORTHEAST AT 30 KT. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 21/1400Z. . 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. . WALTER . NNNN