FVXX20 KWBC 052225
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2225 UTC 05 OCTOBER 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-027 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:  THE GEOPHYSICAL INSTITUTE IN
ECUADOR...GOES-8 VISIBLE INFRARED AND MULTISPECTRAL IMAGERY...QUITO
SURFACE OBSERVATIONS
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ERUPTION DETAILS: ERUPTION OCCURRED AROUND 05/1915 UTC. ASH IS NOW
REACHING FL650.

DETAILS OF ASH CLOUD: A MAJOR VOLCANIC EXPLOSION AT THE GUAGUA
PICHINCHA VOLCANO WAS REPORTED BY THE GEOPHYSICAL INSTITUTE LOCATED
NEAR THE VOLCANO. WHILE THE ERUPTION OCCURRED SEVERAL HOURS AGO
THERE WAS A VERY IMPRESSIVE ASH CLOUD PRODUCED AND IT IS NOW
COVERING A LARGE AREA. THE CITY OF QUITO IS REPORTING ASH OVERHEAD
AND IT IS WORTH NOTING THAT A RATHER LARGE PORTION OF NORTHERN
ECUADOR HAS AN ASH CLOUD OVER IT. THE ASH IS ENCROACHING ON
NEIGBORING COLUMBIA. MORE IMPORTANTLY THERE IS NOW SUGGESTION THAT
THE ASH HAS ASCENDED TO FL650 BASED ON THE LAST TWO HOURS OF
IMAGERY. SATELLITE IMAGERY THROUGH 2145 UTC INDICATES A THICK ASH
CLOUD EXTENDING 312 KM BETWEEN 0.4S 79.7W AND 0S 76.9W. THE ASH
CLOUD IS ABOUT 96 KM WIDE TO THE WEST OF THE SUMMIT AND SHRINKS TO
79 KM WIDE EAST OF THE SUMMIT.
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TRAJECTORY: ASH UP TO FL400 IS MOVING TO THE WEST AT 20 TO 30 KNOTS
WHILE ASH ABOVE FL400 TO FL650 IS MOVING VERY QUICKLY EAST AT 40
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  
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 06/0230 UTC OR SOONER SHOULD
CONDITIONS WARRANT.
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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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