FVXX20 KWBC 192254                      
VOLCANIC ASH ADVISORY 
ISSUED: 2003SEP19/2300Z VAAC: WASHINGTON
 
VOLCANO: TUNGURAHUA  1502-08
LOCATION: S0128W07826    AREA: ECUADOR
 
SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2003/261

INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS
FORECAST.

ERUPTION DETAILS: EMISSION AT 19/1004Z
                                            
OBS ASH DATE/TIME: 19/2245Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA.
WINDS FL100/200 MOVING NW 3-7 KNOTS. FL200/260 MOVING E 5-10
KNOTS. 

FCST ASH CLOUD+6H: SEE SIGMETS.

REMARKS: VISIBLE SATELLITE IMAGERY THROUGH 1915Z SHOWED A
PLUME OF ASH THAT WAS MOVING TO THE NW. SINCE THEN WEATHER
CLOUDS HAVE BUILT UP IN THE REGION MAKING ASH DETECTION
DIFFICULT. A 1725Z PILOT REPORT INDICATED ASH WAS MOVING
WEST. HOWEVER...WINDS HAVE BECOME MORE VARIABLE AT THE
MAXIMUM HEIGHT OF THE ASH NEAR FL260 AS SEEN BY THUNDERSTORM
TOPS MOVING EAST.  THIS HAS BEEN CONFIRMED BY GFS
WINDS...GALLINA  

NEXT ADVISORY: WILL BE ISSUED BY 2003SEP20/0500Z.
 
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