FVXX21 KWBC 011330
VOLCANIC ASH ADVISORY
ISSUED 1330 UTC 01 AUG 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-898         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. THE GEOPHYSICAL INSTITUTE IN QUITO.
01/1200 UTC FORECAST UPPER WINDS FROM THE 01/0000 UTC AVIATION
MODEL.
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM.
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DETAILS OF ASH: GOES-8 IMAGERY THROUGH 1315 UTC SHOWS A LARGE
AREA OF DENSE OVERCAST CLOUDS OBSCURING THE VIEW OF THE
VOLCANO. THE GEOPHYSICAL INSTITUTE IN QUITO REPORTS THAT THERE
WERE SEVERAL MODERATE EXPLOSIONS YESTERDAY (31 JULY) BUT
NOTHING SINCE THEN. THE VOLCANO REMAINS IN A VERY ACTIVE STATE
AND COULD PRODUCE ASH AT ANYTIME.
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TRAJECTORY: UPPER AIR SYNOPTIC PATTERNS SUGGEST ANY ASH UP TO
FL250 WOULD MOVE WEST AT 10 KNOTS. HOWEVER LOCALIZED MESOSCALE
EFFECTS FROM OUTFLOW BOUNDARIES ASSOCIATED WITH HEAVY RAINFALL
MAY CAUSE ASH TO MOVE IN OTHER DIRECTIONS. 
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 01/1930 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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