FVXX20 KWBC 180830 VOLCANIC ASH ADVISORY ISSUED: 2003JUN18/0830Z VAAC: WASHINGTON VOLCANO: TUNGURAHUA 1502-08 LOCATION: S0128W07826 AREA: ECUADOR SUMMIT ELEVATION: 16480 FT (5023 M) ADVISORY NUMBER: 2003/098 INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS FORECAST. GUAYAQUIL MWO SIGMET. ERUPTION DETAILS: ASH EMISSIONS STARTING AT 06/2000Z. OBS ASH DATE/TIME: 18/0745Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS FL100/FL190 MOVING W 10-15 KNOTS. FCST ASH CLOUD +6H: SEE SIGMETS REMARKS: AT 0252Z THE GEOPHYSICAL INSTITUTE OBSERVED ASH TO FL190 MOVING WEST. THICK CLOUDS OBSCURE ANY ASH. NEXT ADVISORY: WILL BE ISSUED BY 2003JUN18/1430Z. NNNN