FVXX20 KNES 250154
VOLCANIC ASH ADVISORY
ISSUED: 2005OCT25/0153Z   VAAC: WASHINGTON

VOLCANO: NEGRA, SIERRA 1503-05
LOCATION: S0049 W09110   AREA: GALAPAGOS

SUMMIT ELEVATION: 4888 FT (1490 M)

ADVISORY NUMBER: 2005/12

INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. 

ERUPTION DETAILS: ONGOING STEAM AND LIGHT ASH
EMISSIONS

OBS ASH DATE/TIME: 25/0115Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL100 MOVING TO W 5-10 KNOTS.
FL100/FL200 MOVING TO SW 15-20 KNOTS.

FCST ASH CLOUD +6H: 25/0730Z SFC/FL200 S0026
W09304 - S0033 W09105 - S0059 W09059 - S0156
W09210 - S0153 W09304 - S0026 W09304 

FCST ASH CLOUD +12H: 25/1330Z SFC/FL200 S0025
W09141 - S0032 W09105 - S0059 W09059 - S0238
W09234 - S0113 W09304 - S0025 W09141 

FCST ASH CLOUD +18H: 25/1930Z SFC/FL200 S0032
W09105 - S0103 W09059 - S0239 W09234 - S0111
W09303 - S0032 W09105 

REMARKS: CANNOT DISCERN ASH USING MULTI-SPECTRAL
IR IMAGERY SINCE NIGHTFALL. THOUGH THE EXTREMELY
BRIGHT HOTSPOT CONTINUES SO WOULD FIGURE SIMILAR
OUTPUT OF STEAM AND GASES WITH LIGHT ASH.   LAST
VISIBLE IMAGERY SHOWED THE WHITE PLUME FANNING OUT
FROM WNW TO SW AND EXTENDED OUT TO ABOUT 92.5W. 
WIND PROFILE CONTINUES TO SUPPORT THE FANNING OUT
OF THE PLUME WITH WINDS SFC/FL100 TRANSPORTING ASH
W WHILE WINDS FL100 TO FL200 TRANSPORTING SW.  
...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2005OCT25/0800Z

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