FVXX20 KNES 231514 VOLCANIC ASH ADVISORY ISSUED: 2005OCT23/1513Z VAAC: WASHINGTON VOLCANO: NEGRA, SIERRA 1503-05 LOCATION: S0049 W09110 AREA: GALAPAGOS SUMMIT ELEVATION: 4888 FT (1490 M) ADVISORY NUMBER: 2005/005 INFORMATION SOURCE: GUAYAQUIL MWO. GOES-12. GFS MODEL WINDS. PILOT REPORT. ERUPTION DETAILS: LARGE ERUPTION 22/2245Z AND AGAIN 23/1300Z OBS ASH DATE/TIME: 23/1415Z OBS ASH CLOUD: SFC/FL250 N0035 W09047 - S0021 W09056 - S0049 W09110 - S0025 W09242 - N0027 W09159 - N0035 W09047 MOVING N 10 KNOTS. FL250/450 S0049 W09110 - S0053 W09109 - S0109 W09129 - S0053 W09132 - S0049 W09110 MOVING SW 25 KNOTS. FCST ASH CLOUD +6H: 23/2030Z SFC/FL250 N0051 W09040 - S0021 W09051 - S0050 W09109 - S0025 W09301 - N0050 W09220 - N0051 W09040 FL250/420 N0009 W09140 - S0049 W09107 - S0124 W09119 - S0208 W09450 - S0047 W09505 - N0009 W09140 FCST ASH CLOUD +12H: 24/0230Z SFC/FL250 N0150 W09059 - S0049 W09105 - S0108 W09250 - S0014 W09420 - N0144 W09430 - N0150 W09059 FL250/420 S0010 W09432 - S0046 W09107 - S0305 W09746 - S0207 W09804 - S0010 W09432 FCST ASH CLOUD +18H: 24/0830Z SFC/FL250 N0301 W09516 - N0257 W09129 - S0046 W09107 - N0016 W09528 - N0301 W09516 FL250/420 N0131 W09559 - S0046 W09107 - S0313 W09935 - S0157 W09943 - N0131 W09559 REMARKS: THE PREVIOUS THINNING HIGH LEVEL CLOUD HAS DISSIPATED. IN THE FIRST VISIBLE IMAGERY OF THE DAY SOME LOWER LEVEL ASH COULD BE SEEN DRIFTING NORTH FROM THE SUMMIT AND ALSO WHAT LOOKS LIKE ANOTHER HIGHER LEVEL ERUPTION CLOUD STARTING TO MOVE SOUTHWEST OFF THE ISLAND. THERE WAS A PILOT REPORT OF THE PLUME TO FL420. THE ERUPTION CLOUDS MOST LIKELY ALSO CONTAIN SOME GASES AND STEAM AS THOSE DISSIPATE A LITTLE FASTER. ...SWANSON NEXT ADVISORY: WILL BE ISSUED BY 2005OCT23/2115Z NNNN