FVXX20 KNES 281519
VOLCANIC ASH ADVISORY
ISSUED: 2005OCT28/1519Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 4888 FT (1490 M)

ADVISORY NUMBER: 2005/027

INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. 

ERUPTION DETAILS: ONGOING EMISSIONS SINCE 22/2330Z

OBS ASH DATE/TIME: 28/1415Z

OBS ASH CLOUD: 

FCST ASH CLOUD +6H: 28/2030Z SFC/FL050 19NM WIDE
LINE BETWEEN N0031 W09135 - S0048 W09110. 

FCST ASH CLOUD +12H: 29/0230Z 

FCST ASH CLOUD +18H: 29/0830Z 

REMARKS: REISSUED DUE TO COMMS PROBLEM.  VISIBLE
SATELLITE IMAGERY SHOWED A PLUME EXTENDING
APPROXIMATELY 110 NMI TO THE NORTH NORTHWEST OF
THE VOLCANO AT 1415Z.  THE HEIGHT OF THE PLUME HAS
BEEN LOWERED SIGNIFICANTLY BASED ON THE OBSERVED
DIRECTION OF MOTION AND MODEL SOUNDING VALID AT
28/1500Z. ...TURK

NEXT ADVISORY: WILL BE ISSUED BY 2005OCT28/2115Z

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