FVXX20 KWBC 201040 VOLCANIC ASH ADVISORY ISSUED: 2001JUL20/1040Z VAAC: WASHINGTON . VOLCANO: TUNGURAHUA 1502-08 LOCATION: 0128S 7826W AREA: ECUADOR . SUMMIT ELEVATION: 16480 FT (5023 M) . ADVISORY NUMBER: 2001/113. . INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL SATELLITE IMAGERY. GUAYAQUIL METEOROLOGICAL WATCH OFFICE. AVIATION MODEL. . ERUPTION DETAILS: ASH OBSERVED AT 20/0834Z. . DETAILS OF ASH CLOUD: A SIGMET FROM THE GUAYAQUIL METEOROLOGICAL WATCH OFFICE REPORTS AN OBSERVATION OF ASH OVER THE VOLCANO AT 20/0834Z TO AN UNKNOWN HEIGHT. SATELLITE IMAGERY THROUGH 20/0945Z DOES NOT SHOW ASH HOWEVER THERE ARE MULTILAYER WEATHER CLOUDS OVER THE SUMMIT THAT MAY BE OBSCURING ASH. . TRAJECTORY: ANY ASH AT SUMMIT LEVEL WILL MOVE TO THE WEST AT 20 TO 30 KTS. . 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. . KARST . NNNN