FVXX20 KWBC 201100
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1100 UTC 20 SEPTEMBER 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-012 ECUADOR 0.17S 78.60W 
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BACKGROUND:    GUAGUA PICHINCHA (1502-02)
               SUMMIT HEIGHT    15,695FT (4784 M)  
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SOURCES OF INFORMATION:  SIGMET FROM GUAYAQUIL MWO.  GOES-8 INFRARED
AND MULTISPECTRAL IMAGERY.

ERUPTION DETAILS: ERUPTION AT APPROXIMATELY 20/0955 UTC.            
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DETAILS OF ASH CLOUD: SIGMET STATES AN ERUPTION OF ASH AND STEAM. 
NO HEIGHT WAS GIVEN IN THE SIGMET AND ASH CAN NOT BE SEEN ON THE
CURRENT GOES-8 SATELLITE IMAGERY THROUGH 20/1015 UTC.
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TRAJECTORY: THE 20/0000 UTC AVIATION MODEL SUGGEST ANY ASH BELOW
FL300 WOULD MOVE TOWARDS THE WEST AT 15-25 KTS. 
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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  
www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE SIGMETS.
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NEXT MESSAGE WILL BE ISSUED AT 20/1700 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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