FVXX21 KWBC 200900
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0900 UTC 20 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-270        ECUADOR 1.47S 78.44W 
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BACKGROUND:    TUNGURAHUA ECUADOR (1502-08)
               SUMMIT HEIGHT 16480 FT (5023 M)
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SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY...20/0600 UTC AVIATION MODEL WIND FORECAST...
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM...
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DETAILS OF ASH: THE GOES-8 IMAGERY THRU 20/0815 UTC DOES NOT
INDICATE ANY ASH. THERE HAVE BEEN OCCASIONAL ASH AND STEAM EMISSIONS
OCCURRING WITH LITTLE OR NO WARNING OVER THE LAST WEEK. CAUTION IS
STRONGLY ADVISED. ANY ASH AND STEAM EMISSIONS HAVE BEEN TYPICALLY
REACHING FL180.
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TRAJECTORY: ANY ASH OR STEAM THAT REACHES FL180 WILL MOVE TO THE
WEST-SOUTHWEST AT ABOUT 15-20 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.
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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 20/1500 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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KARST
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