FVXX21 KWBC 200530 VOLCANIC ASH ADVISORY ISSUED 0530 UTC 20 SEP 2000 BY THE WASHINGTON VAAC . POPOCATEPETL 00-074 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 METEOROLOGICAL WATCH OFFICE. 20/0000 UTC MEXICO CITY UPPER AIR SOUNDING. . ERUPTION DETAILS: SERIES OF EXHALATIONS TO UNKNOWN HEIGHT. . DETAILS OF ASH: NO ASH WAS DETECTED IN SATELLITE IMAGERY THROUGH 20/0315 UTC ALTHOUGH BROKEN CLOUDS OBSCURE THE VIEW OF THE SUMMIT. THE MEXICO CITY METEOROLOGICAL WATCH OFFICE REPORTED THAT CENAPRED INDICATED THE VOLCANO HAS BEEN QUIET SINCE THE INITIAL EXHALATIONS. . TRAJECTORY: ANY ASH AT OR NEAR SUMMIT LEVEL WOULD MOVE TOWARD THE NORTH AT ABOUT 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE LAST ADVISORY ISSUED FOR THIS EVENT. . 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. . CLARK . NNNN