FVXX20 KWBC 102310
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VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2310 UTC 10 DEC 1999 BY THE WASHINGTON VAAC
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GUAGUA PICHINCHA 99-147         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: A SIGNIFICANT ERUPTION AT 2213 UTC AND A SERIES OF
ERUPTIONS THROUGHOUT THE DAY.
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DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE IN ECUADOR REPORTS A
NEW ERUPTION AT 2213 UTC.  SATELLITE IMAGERY THROUGH 2245 UTC SHOWS
THICK ASH FROM THIS ERUPTION MOVING TO THE SOUTH SOUTHEAST AND
SOUTHWEST.  ASH IS MUCH HIGHER THAN THE LOW WEATHER CLOUDS IN THE
VICINITY OF THE VOLCANO BUT IS ESTIMATED TO BE BELOW FL450. AT 2245
UTC ASH WAS APPROXIMATELY BOUNDED BY 0.2S 78.6W TO 0.2S 78.9W TO
0.6S 78.6W TO 0.4S 78.1W TO 0.2S 78.6W BUT THIS AREA SEEMS TO BE
EXPANDING RAPIDLY.
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TRAJECTORY: ASH IS MOVING TO THE SOUTH AT ABOUT 25 KNOTS AND TOWARD
THE SOUTHEAST AT ABOUT 30 KNOTS AND TOWARD THE SOUTHWEST AT 15
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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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 WILL BE ISSUED BY 11/0500 UTC.
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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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