FVXX21 KWBC 231335 . VOLCANIC ASH ADVISORY STATEMENT ISSUED 1335 UTC 23 MAR 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-051 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL IMAGERY THROUGH 23/1215 UTC. . ERUPTION DETAILS: ERUPTED AT APPROXIMATELY 22/1740 UTC . DETAILS OF ASH CLOUD: WE HAVE NOT BEEN ABLE TO DETECT ANY ASH IN THE IMAGERY DURING THE LAST 6 HOURS. THE LAST DETECTED POSITION WAS AT 23.8N 83.8W (0345 UTC) PRIOR TO THE ECLIPSE. . TRAJECTORY: ANY ASH THAT MAY BE PRESENT BETWEEN FL300 AND FL400 WILL BE MOVING EAST-SOUTHEAST AT 70 TO 80 KNOTS BASED ON MODEL FORECAST. . THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS www.ssd.noaa.gov/VAAC/messages.html (all lower case except /VAAC/) . OUTLOOK: SEE VAFTAD. . THIS WILL BE THE LAST MESSAGE CONCERNING THIS ERUPTION. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN