FVXX21 KWBC 231530 VOLCANIC ASH ADVISORY . ISSUED: 2001DEC23/1530Z VAAC: WASHINGTON . VOLCANO: POPOCATEPETL 1401-09 LOCATION: 1901N 9837W AREA: MEXICO . SUMMIT ELEVATION: 17930 FT (5465 M) . ADVISORY NUMBER: 2001/124 INFORMATION SOURCE: GOES-8 VISIBLE AND INFRARED AND MULTISPECTRAL IMAGERY...FORECAST UPPER LEVEL WINDS FROM AVIATION MODEL. . ERUPTION DETAILS: ERUPTIONS AT 23/0730Z AND 22/2335Z. . DETAILS OF ASH CLOUD: ASH FROM THE EARLIER ERUPTIONS ARE NO LONGER VISIBLE IN SATELLITE IMAGERY. ASH FROM THE ERUPTION AT 2335Z HAD MOVED TO THE SOUTHEAST AND DISSIPATED WHILE ASH FROM THE ERUPTION AT 0730Z MOVED TO THE EAST AND DISSIPATED. . TRAJECTORY: ANY ASH THAT MIGHT STILL EXIST UP TO FL220 WILL MOVE TO THE EAST OR SOUTHEAST AT 20 TO 25KTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . NEXT ADVISORY: NO FURTHER ADVISORIES . KARST . NNNN