FVXX20 KWBC 191930 VOLCANIC ASH ADVISORY ISSUED: 2001DEC19/1930Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2001/112 . INFORMATION SOURCE: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY MWO REPORT. CENAPRED WEB CAMERA. SIX HOUR WIND FORECAST FROM THE 19/1200Z AVIATION MODEL. . ERUPTION DETAILS: SMALL EXHALATION AT 19/1821Z. . DETAILS OF ASH CLOUD: THE MEXICO CITY MWO REPORTS THAT THE VOLCANO HAD A SMALL EXHALATION AT 19/1821Z. IT IS ESTIMATED THAT THE HEIGHT OF THE ASH IS TO FL250 AND IS MOVING TOWARDS THE NORTHEAST. CURRENTLY..ASH CAN NOT BE SEEN ON THE SATELLITE IMAGERY. . TRAJECTORY: ASH AT FL250 WILL MOVE TOWARDS THE NORTHEAST AT 25 KNOTS. . OUTLOOK: SEE SIGMETS. . NEXT ADVISORY: NEXT ADVISORY: WILL BE ISSUED BY 2001DEC20/0130Z. . WALTER/KARST . NNNN