FVXX21 KWBC 230730 . VOLCANIC ASH ADVISORY STATEMENT - CORRECTED FOR PROPER GRAPHIC ISSUED 0730 UTC 23 MAR 1999 BY THE WASHINGTON VAAC . POPOCATEPETL 99-050 MEXICO 19.02N 98.62W . BACKGROUND: POPOCATEPETL MEXICO (1401-09) SUMMIT HEIGHT 17930 FT (5465 M) . SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL IMAGERY. 23/0000 UTC MEXICO CITY UPPER-AIR DATA. . ERUPTION DETAILS: ERUPTED AT APPROXIMATELY 22/1740 UTC . DETAILS OF ASH CLOUD: THE LAST POSITION OF THE ASH BEFORE THE ECLIPSE (0345 UTC) WAS AT 23.8N 83.8W. AT THIS TIME THE ASH WAS MOVING TO THE EAST AT 80 KNOTS. HOWEVER ON THE TWO IMAGES AFTER THE SATELLITE CAME OUT OF ECLIPSE (0645 AND 0715) WE ARE UNABLE TO LOCATE THE ASH. . TRAJECTORY: EAST AT 80 KNOTS. . 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 AND SIGMETS. . THE NEXT MESSAGE WILL BE AT 23/1330 UTC. . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . NNNN