FVXX20 KWBC 071230
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1230 UTC 07 OCTOBER 1999 BY THE WASHINGTON VAAC 
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GUAGUA PICHINCHA 99-033 ECUADOR 0.17S 78.60W 
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BACKGROUND:    GUAGUA PICHINCHA (1502-02)
               SUMMIT HEIGHT    15,695 FT (4784 M)  
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SOURCES OF INFORMATION: GOES8 VISIBLE INFRARED AND MULTISPECTRAL
IMAGERY THROUGH 1215 UTC..0000 UTC NUMERICAL WEATHER MODEL AND
TRAJECTORY FORECASTS. UNITED STATES GEOLOGICAL SURVEY AT GEOPHYSICAL
INSITUTE IN QUITO. 
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ERUPTION DETAILS: 07/1207 UTC 

DETAILS OF ASH CLOUD: THE USGS AT THE GEOPHYSICAL INSITUTE REPORTED
AN EXPLOSITVE ERUPTION OF GUAGUA AT 07/1207 UTC. THE GOES 8 VISIBLE
IMAGE AT 07/1215 UTC SHOWS AN IMPRESSIVE ASH CLOUD OVER THE VOLCANO
WITH A SHARP SHADOW WHICH WOULD INDICATE A HIGH ERUPTION. THE
ESTIMATE OF THE ERUPTION HEIGHT IS TO AT LEAST FL500 AND POSSIBLY
HIGHER.
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TRAJECTORY: ASH TO FL400 WOULD MOVE TOWARDS THE SOUTHWEST AT 15 TO
20 KTS WHILE ASH FROM FL400 TO FL600 WOULD MOVE TOWARD THE EAST AT
15 TO 20 KTS. 
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OJK/ALS/BH
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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 NEST MESSAGE WILL BE ISSUED AS SOON AS POSSIBLE
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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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