FVXX20 KNES 211556 VOLCANIC ASH ADVISORY ISSUED: 2006MAY21/1556Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2006/306 INFORMATION SOURCE: GOES-12. ERUPTION DETAILS: ASH OBSERVED 20/1915Z OBS ASH DATE/TIME: 21/1515Z OBS ASH CLOUD: VA NOT IDENTIFIABLE FROM SATELLITE DATA. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THERE HAVE BEEN NO REPORTS OF ACTIVITY SINCE 20/1915Z. ...TURK NEXT ADVISORY: NO FURTHER ADVISORIES NNNN