FVXX21 KWBC 121755 VOLCANIC ASH ADVISORY ISSUED: 2001JAN12/1755Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/28 INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. THE GEOPHYSICAL INSTITUTE IN QUITO. GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET . ERUPTION DETAILS: NEAR SUMMIT ASH EMISSION . DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE REPORTS THAT A SMALL CLOUD OF ASH AND STEAM TO FL220 WAS OBERVED MOVING TO THE WEST. THIS ASH CANNOT BE SEEN IN SATELLITE IMAGERY THROUGH 1715Z POSSIBLY BECAUSE IT IS OBSCURED BY WEATHER CLOUDS IN THE AREA. . TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN THE SUMMIT AND FL220 WOULD MOVE TO THE WEST AT ABOUT 20 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE ONLY ADVISORY ISSUED ON THIS EVENT UNLESS NEW INFORMATION IS RECEIVED. . REAL TIME SATELLITE IMAGERY AND 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. . NNNN