FVXX21 KWBC 241330 VOLCANIC ASH ADVISORY ISSUED 1330 UTC 24 JUL 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-865 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL IMAGERY. 24/1200 UTC FORECAST UPPER WINDS FROM THE 24/0000 UTC AVIATION MODEL. THE GEOPHYSICAL INSTITUTE IN QUITO. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1245 UTC SHOWS EXTENSIVE LOW AND MID LEVEL CLOUDS OBSCURING THE VIEW OF TUNGURAHUA. THE GEOPHYSICAL INSTITUTE REPORTS THAT TUNGURAHUA WAS VERY QUIET OVERNIGHT AND CONTINUES TO SHOW NO SIGNS OF ANY ACTIVITY. THE VOLCANO REMAINS IN A VERY ACTIVE STATE AND COULD PRODUCE ASH EMISSIONS AT ANYTIME. . TRAJECTORY: UPPER AIR PATTERS SUGGEST ANY ASH AT OR NEAR SUMMIT LEVEL TO MOVE SOUTHWEST AT 10 TO 15 KNOTS. ASH TO FL300 WOULD MOVE WEST AT 10 KNOTS. ASH ABOVE FL300 WOULD MOVE NORTHWEST AT 5 TO 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 24/1930 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER 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. . HUGHES . NNNN