FVXX20 KWBC 062129       
VOLCANIC ASH ADVISORY
ISSUED: 2003OCT06/2130Z VAAC: WASHINGTON
 
VOLCANO: TUNGURAHUA  1502-08
LOCATION: S0128W07826    AREA: ECUADOR
 
SUMMIT ELEVATION: 16480 FT (5023 M)

ADVISORY NUMBER: 2003/332

INFORMATION SOURCE: GOES-12 IMAGERY. GFS MODEL WINDS
FORECAST. GUAYAQUIL MWO SIGMET.  GEOPHYSICAL INSTITUTE       

ERUPTION DETAILS: SERIES OF EMISSIONS STARTING AT 21/2345Z
                                            
OBS ASH DATE/TIME: 06/2045Z

OBS ASH CLOUD: SFC/FL250 S0128W07826 S0104W07830 S0105W07800
S0128W07826 MOVING NE 5-10 KNOTS.

FCST ASH CLOUD+6H: SEE SIGMETS.

REMARKS: THE MOST RECENT OBSERVATION FROM THE GEOPHYSICAL
INSTITUTE AT 1852Z INDICATED THAT ASH WAS MOVING NORTH
NORTHWEST BUT SATELLITE IMAGERY THROUGH 2045Z INDICATED THAT
THE ASH PLUME WAS NOW MOVING PREDOMINANTLY TO THE NORTHEAST. 
THE OBSERVED MOVEMENT OF THE ASH DOES NOT CORRESPOND TO
MODEL FORECAST WINDS WHICH MAKES THE HEIGHT ASSIGNMENT
ESPECIALLY DIFFICULT.  THE PRESENT ESTIMATED HEIGHT IS BASED
ON A PILOT REPORT OF ASH TO FL230 AT 1405Z.  TURK

NEXT ADVISORY: WILL BE ISSUED BY 2003OCT07/0330Z.  
 
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                                             "Attached Graphic Map Depicting Ash Only" 

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