FVXX20 KWBC 031330
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1331 UTC 03 DEC 1999 BY THE WASHINGTON VAAC
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GUAGUA PICHINCHA 99-138         ECUADOR 0.17S 78.60W 
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BACKGROUND:    GUAGUA PICHINCHA ECUADOR (1502-02)
               SUMMIT HEIGHT    15695 FT (4784 M)  
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SOURCES OF INFORMATION: THE GEOPHYSICAL INSTITUTE IN ECUADOR.
GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL IMAGERY.  U.S. NUMERICAL
MODEL WIND FORECAST.
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ERUPTION DETAILS: LARGE ERUPTION AT 03/0300 UTC.
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DETAILS OF ASH CLOUD: ASH IS NO LONGER VISIBLE ON THE CURRENT
SATELLITE IMAGERY THROUGH 03/1315 UTC. 
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TRAJECTORY: UPPER AIR PATTERNS BASED ON NUMERICAL GUIDANCE SUGGEST
ANY REMAINING ASH AT FL360 WOULD CONTINUE TO MOVE TO THE WEST AT
5 KNOTS WHILE ANY REMAINING ASH AT FL250 WOULD CONTINUE TO MOVE TO
THE SOUTHWEST AT 5 TO 10 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  
http://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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WALTER/NOAA/NESDIS/SAB
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EFFECTIVE JANUARY 3 2000 AT 0000 UTC... ALL REFERENCES TO LATITUDE
AND LONGITUDE IN VOLCANIC ASH ADVISORY STATEMENTS WILL BE IN DEGREES
AND MINUTES OF A DEGREE. EXAMPLE: 16.70N 62.20W  WILL BE  1642N6212W
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THE NEXT STATEMENT ISSUED WILL BE A WATCH STATEMENT DATED 04/1700.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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