FVXX20 KWBC 281446
VOLCANIC ASH ADVISORY
ISSUED: 2005OCT28/1446Z   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: SFC/FL050 19NM WIDE LINE BETWEEN
N0026 W09218 - S0011 W09133 - S0048 W09110. ASH IS
MOVING NW 10-15 KNOTS. 

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

FCST ASH CLOUD +12H: 29/0230Z SFC/FL050 19NM WIDE
LINE BETWEEN N0032 W09128 - S0047 W09110. 

FCST ASH CLOUD +18H: 29/0830Z SFC/FL050 19NM WIDE
LINE BETWEEN N0032 W09131 - S0047 W09110. 

REMARKS: 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 2005OCT28/2045Z

NNNN
Full Size Graphic


-