FVXX21 KWBC 181000
VOLCANIC ASH ADVISORY
ISSUED 1000 UTC 18 JUL 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-838         ECUADOR 0128S 7826W 
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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. 18/1200 UTC AVIATION MODEL WINDS FORECAST FROM THE
18/0000 UTC MODEL RUN.
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ERUPTION DETAILS: GASES WITH OCCASIONAL ASH EMISSIONS.  
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DETAILS OF ASH: IMAGERY THROUGH 0915 UTC DOES NOT INDICATE THE
PRESENCE OF ASH. PILOT AND SURFACE REPORTS FROM 6 HOURS
EARLIER DID INDICATE ASH AT OR NEAR THE SUMMIT. PILOTS ARE
REMINDED THAT TUNGURAHUA REMAINS IN A VERY ACTIVE STATE AND
COULD PRODUCE ASH EMISSIONS AT ANYTIME.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR
SUMMIT LEVEL TO MOVE SOUTHWEST AT 5 TO 10 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE ISSUED BY 18/1600 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORIES 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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES
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