FVXX21 KWBC 240130 VOLCANIC ASH ADVISORY STATEMENT ISSUED 0130 UTC 24 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-094 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY...JANUARY 23 REPORT FROM THE INSTITUTO GEOFISICO...23/1200 UTC UPPER AIR DATA FROM THE INSTITUTO GEOFISICO...GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY THROUGH 23/2345 UTC POSSIBLY BECAUSE OF THE LOW AND MID LEVEL WEATHER CLOUDS IN THE AREA. THE INSTITUTO GEOFISICO REPORTS THAT THIS AFTERNOON THEY OBSERVED A VERY DIFFUSE ASH CLOUD SLIGHTLY ABOVE THE SUMMIT AND MOVING TOWARD THE WEST. A SIGMET FROM THE GUAYAQUIL MWO CITES A SURFACE REPORT OF ASH MOVING TO THE NORTHWEST WEST AND SOUTHWEST. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH FROM THE SUMMIT TO FL220 WOULD MOVE TO THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 24/0730 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