FVXX20 KWBC 172221 VOLCANIC ASH ADVISORY ISSUED: 2001JUL17/22xxZ VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/111. . INFORMATION SOURCE: GOES-8 VISIBLE INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. 12 HOUR WIND FORECAST FROM THE 17/1200Z AVIATION MODEL. . ERUPTION DETAILS: ASH OBSERVED AT 17/2120Z. . DETAILS OF ASH CLOUD: A NEW SIGMET FROM THE GUAYAQUIL METEOROLOGICAL WATCH OFFICE REPORTS AN OBSERVATION OF ASH TO FL210 OVER THE VOLCANO AT 2120Z. SATELLITE IMAGERY AT 17/2115Z DOES NOT SHOW ASH BUT THERE ARE MULTILAYER WEATHER CLOUDS OVER THE SUMMIT THAT MAY BE OBSCURING ASH. . TRAJECTORY: ASH TO FL210 IS REPORTED TO BE MOVING WEST. UPPER AIR PATTERNS SUGGEST THAT THE ASH WILL MOVE AT ABOUT 10 KNOTS. . OUTLOOK: SEE SIGMETS. . THIS WILL BE THE FINAL ADVISORY FOR THIS EVENT UNLESS NEW INFORMATION BECOMES AVAILABLE. . 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. . WALTER . NNNN