FVXX21 KWBC 011300 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1300 UTC 01 APR 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-386 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY THROUGH 1215 UTC. 6 HOUR UPPER WIND FORECAST FROM THE 0600 UTC AVIATION MODEL. MARCH 31 GEOPHYSICAL INSTITUTE REPORT. . ERUPTION DETAILS: GAS AND ASH EMISSIONS . DETAILS OF ASH: THE FIRST VISIBLE IMAGES OF THE DAY INDICATE DENSE CLOUDS OBSCURING THE VIEW OF THE AREA SURROUNDING THE SUMMIT. HENCE NO ASH CAN BE DETECTED FROM SATELLITE AT THIS TIME. THE GEOPHYSICAL INSTITUTE REPORTED ON MARCH 31 THAT EMISSIONS PRODUCED WESTWARD MOVING ASH AT ABOUT FL230. ASH WAS LAST DETECTED IN 31/1815 SATELLITE IMAGERY TO ABOUT FL300. . TRAJECTORY: ACCORDING TO UPPER AIR FORECASTS ANY ASH THAT MAY EXIST BETWEEN THE SUMMIT AND FL300 WILL MOVE TO THE WEST AT 10 TO 15 KNOTS. . OUTLOOK: SEE SIGMETS AND VAFTAD. . THE NEXT STATEMENT WILL BE ISSUED BY 01/1900 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. . CLARK . NNNN