FVXX20 KWBC 100850 VOLCANIC ASH ADVISORY ISSUED 0850 UTC 10 OCT 2000 BY THE WASHINGTON VAAC . POPOCATEPETL 00-081 MEXICO 1901N 9837W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY MWO. 0000 UTC MEXICO CITY UPPER AIR SOUNDING. . ERUPTION DETAILS: MODERATE EXHALATION AT 10/0228 UTC. . DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 0815 UTC SHOWS NO INDICATION OF ASH. THE HOT SPOTS SEEN IN EARLIER IMAGERY HAVE ALSO SUBSIDED. INITIAL REPORTS PLACED THE ASH UP TO FL350 MOVING EAST. SOUNDING INFORMATION SUPPORTS EASTWARD MOVEMENT UP TO FL270. . TRAJECTORY: EAST AT ABOUT 5 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED AROUND 1500 UTC. . 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