FVXX20 KWBC 130600 VOLCANIC ASH ADVISORY ISSUED: 2000DEC13/0600Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2000/166 INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY MWO. CENAPRED.MMBP SURFACE OBSERVATION . ERUPTION DETAILS: ERUPTION BEGINNING AT 12/2207Z AND ENDING AROUND 0030Z. . DETAILS OF ASH CLOUD: GOES8 IMAGBER THROUGH 0515Z SHOWS 2 AREAS OF ASH. THE MOST DENSE AREA OF ASH IS APPROXIMATELY BOUNDED BY 2058N 9642W 2130N 9642W 2143N 9552W. THIS AREA IS 117KM( 63NMI) LONG AND 50KM (27NMI) WIDE. ASH IS MOVING NORTHEAST AT 35 KNOTS AND IS ESTIMATED AT FL350 BY THE MEXICO CITY MWO. A SECOND AREA OF THIN DISPERSING ASH IS APPROXIMATELY BOUNDED BY 2006N 9746W 2046N 9818W 2104N 9822W 2058N 9759W 2016N 9722W. THIS AREA IS 133KM( 72NMI) LONG AND 52KM (28NMI) WIDE. MOVEMENT IS NORTH-NORTHEAST AT ABOUT 15-20 KNOTS. MMPB HAS REPORTED ASH BETWEEN FL160 AND FL180 WHICH AGREE WITH THE 00Z MEXICO CITY RAOB FOR THIS AREA. . TRAJECTORY: HIGH LEVEL ASH NORTHEAST AT ABOUT 35 KNOTS. LOW LEVEL ASH NORTHNORTHEAST AT 15-20 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 13/1200Z. . 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. . . NNNN