FVXX20 KWBC 162055 VOLCANIC ASH ADVISORY ISSUED: 2000DEC16/2055Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2000/184 INFORMATION SOURCE: GOES-8 VISIBLE .. INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY UPPER AIR SOUNDINGS. CENAPRED CAMERA. . ERUPTION DETAILS: INTERMITTENT VENTING OF STEAM AND ASH . DETAILS OF ASH CLOUD: GOES8 IMAGERY THROUGH 2015Z SHOWS A VERY FAINT PLUME ON THE VISIBLE IMAGE UNDER SCATTERED CIRRUS CLOUDS. THIS PLUME EXTENDS 14 KM (7.5NMI) SOUTHWEST OF THE VOLCANO TO A POINT 1854N 9844W AND IS ABOUT 6 KM (3 NMI) WIDE. THE CENAPRED CAMERA SHOWS WHAT APPEARS TO BE SOME THIN ASH MOVING TO THE SOUTH SOUTHWEST. . TRAJECTORY: ASH FROM THE SUMMIT TO FL200 WOULD MOVE TOWARD THE SOUTH SOUTHWEST AT UP TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT MESSAGE WILL BE ISSUED BY 17/0300Z. . 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