FVXX20 KWBC 260800
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0750 UTC 26 NOV 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-115      ECUADOR 0.17S 78.60W 
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BACKGROUND:    GUAGUA PICHINCHA ECUADOR (1502-02)
               SUMMIT HEIGHT    15695 FT (4784 M)  
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SOURCES OF INFORMATION: GOES-8 MULTISPECTRAL IMAGERY..REPORTS AND
WINDS ALOFT INFORMATION FROM THE GEOFISICO INSTITUTO ...00 UTC
AVIATION MODEL WIND FORECAST...SURFACE REPORTS FROM QUITO
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ERUPTION DETAILS: AN ERUPTION OCCURRED AT 26/0127 UTC.
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DETAILS OF ASH CLOUD: THE 0127 UTC ERUPTION PRODUCED HIGH LEVEL ASH
THAT MOVED TO THE WEST AND MID-LEVEL ASH THAT MOVED TO THE EAST. THE
MID-LEVEL EASTWARDLY MOVING ASH ESTIMATED UP TO FL250 CANNOT
CURRENTLY BE SEEN IN SATELLITE IMAGERY DUE TO DENSE WEATHER CLOUDS
IN THE AREA.  HOWEVER THE HIGHER WESTWARD MOVING ASH HAS BECOME
FAINT BUT CAN STILL BE SEEN IN IMAGERY. THIS ASH IS NOW OVER THE
PACIFIC OCEAN. AT 0715 UTC THE ASH WAS DISCERNIBLE WITHIN 40 KM (21
NMI) OF THE POINT 0.5N 82.4W AND COULD BE SEEN MOVING WEST
NORTHWESTWARD. ASH TOO FAINT TO SEE IN IMAGERY IS QUITE POSSIBLY
EAST OF THIS AREA.  
     ANY ASH IN THE VICINITY OF THE VOLCANO OR EAST OF THE VOLCANO
WOULD BE UNDER DENSE WEATHER CLOUDS AND MIGHT BE IMPOSSIBLE TO SEE
IN SATELLITE IMAGERY. SURFACE OBSERVATIONS FROM QUITO ARE REPORTING
DECREASED VISIBILITY DUE TO VOLCANIC ASH. 
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TRAJECTORY: AN AREA OF ASH ESTIMATED UP TO FL420 IS OVER THE PACIFIC
AND MOVING WEST NORTHWESTWARD AT 30 TO 35 KNOTS.  UPPER AIR PATTERNS
SUGGEST THAT ANY ASH NEAR THE VOLCANO BELOW FL250 WILL MOVE TO THE
NORTHEAST TO EAST AROUND 10 KNOTS. ASH BETWEEN FL300 AND FL420 WILL
MOVE WEST TO WEST NORTHWEST AT UP TO 35 KNOTS.  
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH
ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH
LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS  
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 26/1400 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN"Attached Graphic Map Depicting Ash" 

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