FVXX20 KWBC 202300
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2300 UTC 20 SEPTEMBER 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-014 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: GOES 8 SATELLITE IMAGERY AT 2045 UTC DOES NOT
DETECT ANY FURTHER ACTIVITY AT THE VOLCANO. THE GEOPHYSICAL
INSTITUTE REPORTED A PHREATIC EXPLOSION OF 2KM HIGH, TO FL 200,
CONTINING VAPOR BUT NO ASH AT 1426 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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THIS WILL BE THE LAST MESSGE FOR THIS EVENT.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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