FVXX21 KWBC 161715
VOLCANIC ASH ADVISORY
ISSUED 1715 UTC 16 SEP 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-1085        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 VISIBLE...INFRARED...AND
MULTISPECTRAL IMAGERY. 16/1800 UTC FORECAST UPPER WINDS FROM
THE 16/1200 UTC AVIATION MODEL. THE GEOPHYSICAL INSTITUTE IN
QUITO. 
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ERUPTION DETAILS: OCCASIONAL STEAM AND ASH EMISSIONS.
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DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1715 UTC DOES NOT
INDICATE THE PRESENCE OF ASH. THERE HAS BEEN NO ASH DETECTION
IN THE PAST 48 HOURS...THUS CURRENT ADVISORIES WILL BE SCALED
BACK INTO A WATCH.
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...AVIATION INTERESTS ARE REMINDED THAT TUNGURAHUA REMAINS
VERY ACTIVE AND HAS A HISTORY OF PRODUCING OCCASIONAL NEAR
SUMMIT ASH. TYPICAL ASH MOVEMENT IS TO THE WEST AT UNDER 20
KNOTS...
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH AT OR NEAR
SUMMIT LEVEL TO MOVE WEST AT 15 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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***THIS WILL BE THE LAST IMMEDIATE ADVISORY ON THIS EVENT
UNLESS ACTIVITY INCREASES AGAIN. THE NEXT ADVISORY WILL BE A
WATCH ISSUED 17/1700 UTC***
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REAL TIME SATELLITE IMAGERY AND 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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