FVXX21 KNES 280636 VOLCANIC ASH ADVISORY ISSUED: 20070728/0632Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128 W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2007/457 INFORMATION SOURCE: GOES-12. GFS WINDS. GUAYAQUIL MWO SIGMETS ERUPTION DETAILS: FREQUENT ASH EMISSIONS OBS ASH DATE/TIME: 28/0545Z OBS ASH CLOUD: SFC/FL290 S0124 W07834 - S0125 W07829 - S0132 W07829 - S0127 W07841 - S0124 W07834 MOVING SW 5-15 KNOTS. FCST ASH CLOUD +6H: 28/1200Z SFC/FL290 S0126 W07828 - S0143 W07828 - S0147 W07846 - S0128 W07849 - S0126 W07828 FCST ASH CLOUD +12H: 28/1800Z SFC/FL290 S0128 W07826 - S0141 W07831 - S0152 W07844 - S0134 W07850 - S0128 W07826 FCST ASH CLOUD +18H: 29/0000Z NOT AVBL REMARKS: IN THE PAST 6 HOURS GEOPHYSICAL INST OBSERVERS HAVE REPORTED SEVERAL ASH EMISSIONS RANGING FROM FL210 TO FL290. SOME OF THESE EMISSIONS CAN BE TRACKED IN SATELLITE IMAGERY FOR AN HOUR OR TWO AS THEY MOVE FROM THE SUMMIT TOWARD THE WEST OR SOUTHWEST AND THEN DISSIPATE. THE MOST RECENT IMAGE AT 0545Z SHOWS A NEW PUFF JUST WEST OF THE VOLCANO AND THE PREVIOUS PUFF HAS ALREADY DISSIPATED. ... NEXT ADVISORY: WILL BE ISSUED BY 20070728/1245Z