FVXX20 KNES 242002 VOLCANIC ASH ADVISORY ISSUED: 2005OCT24/2002Z VAAC: WASHINGTON VOLCANO: NEGRA, SIERRA 1503-05 LOCATION: S0049 W09109 AREA: GALAPAGOS SUMMIT ELEVATION: 4888 FT (1490 M) ADVISORY NUMBER: 2005/10 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS MODEL WINDS. PILOT REPORT. ERUPTION DETAILS: ONGOING EMISSIONS SINCE 22/2330Z. OBS ASH DATE/TIME: 24/1945Z OBS ASH CLOUD: SFC/FL200 20NM WIDE LINE BETWEEN S0050 W09141 - S0049 W09107. ASH IS MOVING W 5-10 KNOTS. FCST ASH CLOUD +6H: 25/0200Z SFC/FL200 S0022 W09235 - S0037 W09104 - S0118 W09102 - S0131 W09223 - S0022 W09235 FCST ASH CLOUD +12H: 25/0800Z SFC/FL200 S0029 W09107 - S0102 W09052 - S0159 W09209 - S0040 W09236 - S0029 W09107 FCST ASH CLOUD +18H: 25/1400Z SFC/FL200 S0031 W09110 - S0100 W09100 - S0204 W09231 - S0057 W09300 - S0031 W09110 REMARKS: A PILOT REPORTED THAT THE PLUME WAS RISING TO FL200. THE ACTIVITY APPEARS TO BE CONSISTENT WITH AN EXTREMELY BRIGHT HOTSPOT...THOUGH THE CONSISTENCY OF THE PLUME IS SHIFTING TOWARD MORE STEAM AND GASES RATHER THAN ASH. HOWEVER...AVOIDANCE IS STRONGLY SUGGESTED AS ACTIVITY COULD SWITCH BACK WITHOUT WARNING. ...GALLINA NEXT ADVISORY: WILL BE ISSUED BY 2005OCT25/0200Z NNNN