FVXX20 KWBC 241500
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1500 UTC 24 NOV 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-105      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 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY...THE INSTITUTO GEOFISICO IN QUITO...00 UTC AVIATION MODEL
WIND FORECAST...SIGMET FROM GUAYAQUIL METEOROLOGICAL WATCH OFFICE
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ERUPTION DETAILS: THE INSTITUTO GEOFISICO INDICATES THAT SOME DOME
COLLAPSES ARE PRODUCING SMALL ASH CLOUDS.
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DETAILS OF ASH CLOUD: SMALL ASH CLOUDS MAINLY LOCATED NEAR THE
SUMMIT ARE REPORTED BY THE INSTITUTO GEOFISICO TO OCCASIONALLY MOVE
TOWARD AND REACH QUITO.  ASH CLOUDS ARE REPORTED TO MOST OFTEN MOVE
TOWARD THE WEST.  IN THE SIGMET ASH HEIGHT IS ESTIMATED TO BE AT
ABOUT FL220.
    SATELLITE IMAGERY THROUGH 1415 UTC DOES NOT SHOW ANY ASH BUT
THIS COULD BE DUE TO THE NUMEROUS WEATHER CLOUDS IN THE AREA
OBSCURING ASH.
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TRAJECTORY: WINDS SEEM TO BE LIGHT AND VARIABLE BETWEEN FL220 AND
FL160.  UPPER AIR PATTERNS SUGGEST THAT ASH WILL MOVE AT LESS THAN 8
KNOTS AND ASH HAS MOST FREQUENTLY BEEN OBSERVED MOVING TOWARD THE
WEST. 
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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.
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THE NEXT STATEMENT WILL BE ISSUED BY 24/2100 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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