FVXX20 KWBC 251915 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1915 UTC 25 MAY 2000 BY THE WASHINGTON VAAC . POPOCATEPETL 00-031 MEXICO 1901N 9837W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED AND MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE. CENAPRED REAL TIME WEB CAMERA. . ERUPTION DETAILS: EXHALATION OF STEAM AND ASH . DETAILS OF ASH CLOUD: THE MEXICO CITY METEOROLOGICAL WATCH OFFICE REPORTS ASH RISING TO FL230 AND MOVING SLOWLY NORTH. GOES-8 IMAGERY THROUGH 1845 UTC DOES NOT SHOW ANY ASH POSSIBLY BECAUSE THE ASH IS OBSCURED BY SOME WEATHER CLOUDS IN THE VICINITY OF THE VOLCANO. . TRAJECTORY: GROUND OBSERVERS REPORT THAT THE ASH IS MOVING TOWARD THE NORTH. BETWEEN THE SUMMIT AND FL230 THE UPPER AIR PATTERNS SUGGEST LIGHT AND VARIABLE WINDS WITH ANY ASH MOVING AT LESS THAN 15 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT MESSAGE WILL BE ISSUED BY 26/0100 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS 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