FVXX20 KWBC 031715
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1715 UTC 03 JAN 1999 BY THE WASHINGTON VAAC
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GUAGUA PICHINCHA 99-001    ECUADOR 0.17S 78.6W  
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BACKGROUND:    GUAGUA PICHINCHA (NEAR QUITO) (1502-02)
               SUMMIT HEIGHT 15696 FT (4784M)
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SOURCES OF INFORMATION:  SIGMET FROM GUAYAQUIL (SEGU)...GOES-8
VISIBLE INFRARED AND MULTISPECTRAL IMAGERY. GOES HIGH DENSITY WINDS.
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ERUPTION DETAILS: SOMETIME BEFORE 1240 UTC MOVING WEST.
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DETAILS OF ASH CLOUD: WE HAVE RECEIVED AN AMENDED SIGMET FROM ECUADOR
ISSUED AT 1610 UTC (NOT THE ORIGINAL ISSUED AT 1240 UTC) FOR AN
ERUPTION OF GUAGUA.  SATELLITE IMAGERY SHOWS BROKEN CONVECTIVE CLOUDS
AROUND THE AREA. NO DISCERNABLE ASH CLOUD CAN BE FOUND THROUGH THE
BREAKS. THE SIGMET STATES THE ERUPTION LASTED 20 MINUETS AND WENT TO
2000M AND MOVED WEST. WE ARE ASSUMING THIS IS ABOVE THE SUMMIT WHICH
WOULD PLACE THE ERUPTION CLOUD TO BETWEEN FL200 AND FL250. 
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TRAJECTORY: THE ASH WILL MOVE WEST TO WEST SOUTHWEST AROUND 15 TO 20
KNOTS. 
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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/messages.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE LATEST SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED AROUND 03/23OO UTC UNLESS FURTHER
INFORMATION IS RECEIVED OR THE ASH CLOUD BECOMES DETECTABLE.       
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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