FVXX20 KNES 242005 CCA
VOLCANIC ASH ADVISORY -CORRECTION
ISSUED: 2005OCT24/2005Z   VAAC: WASHINGTON

VOLCANO: NEGRA, SIERRA 1503-05
LOCATION: S0049 W09109   AREA: GALAPAGOS

SUMMIT ELEVATION: 4888 FT (1490 M)

ADVISORY NUMBER: 2005/11

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: CORRECTION FOR ADVISORY NUMBER...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

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