FVXX20 KWBC 202155                                     
VOLCANIC ASH ADVISORY
ISSUED: 2003AUG20/2200Z  VAAC: WASHINGTON
 
VOLCANO: TUNGURAHUA  1502-08
LOCATION: S0128W07826    AREA: ECUADOR
                              
SUMMIT ELEVATION: 16480 FT (5023 M)
 
ADVISORY NUMBER: 2003/147
 
INFORMATION SOURCE: GUAYAQUIL MWO SIGMET.  GOES-12
IMAGERY. GFS MODEL WINDS FORECAST.
 
ERUPTION DETAILS: ASH ERUPTION STARTED AT 20/1745Z
 
OBS ASH DATE/TIME: 20/2115Z
 
OBS ASH CLOUD: SFC/FL150 S0126W07829 S0128W07838
S0131W07838 S0131W07835 S0130W07833 S0126W07829 MOVING
W 5-10 KNOTS. SFC/FL200 S0127W07830 S0130W07832
S0133W07832 S0133W07829 S0128W07827 S0127W07830 MOVING
SW 5 KNOTS. SFC/FL320 S0128W07826 S0121W07824
S0121W07828 S0127W07830 S012W07826 MOVING N 5 KNOTS.   

                                                  
FCST ASH CLOUD+6H: SEE SIGMETS.
                                   
REMARKS: THE WEATHER CLOUDS THAT COVERED THE AREA
EARLIER HAVE SINCE DISSIPATED...CLEARLY SHOWING AN
AREA OF ASH NEAR THE SUMMIT OF TUNGURAHUA.
HOWEVER...WINDS IN THE AREA ARE VERY LIGHT...BELOW THE
SUMMIT WIND ARE MOVING WEST...SLIGHTLY ABOVE THE
SUMMIT ASH IS DRIFTING ALMOST IN EVERY DIRECTION
EXCEPT THE SE. GFS MODEL WINDS ARE INDICATING THAT THE
HIGHEST ASH MAY BE REACHING TO FL320 AND POSSIBLY
HIGHER. HOWEVER...MULTI-SPECTRAL IMAGERY DOES NOT
DETECT THE HIGHER LEVEL ASH TO THE NE OF THE SUMMIT
INDICATING THE ASH MAY BE A BIT THINNER....GALLINA   
 
NEXT ADVISORY: WILL BE ISSUED BY 2003AUG21/0400Z 
               
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"Attached Graphic Map Depicting Ash Only" 

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