FVXX21 KWBC 171430
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1430 UTC 17 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-453        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...NATIONAL WEATHER SERVICE MODEL WINDS
FORECAST...APRIL 16 REPORT FROM THE GEOPHYSICAL INSTITUTE
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH
OCCASIONAL ASH EMISSIONS.
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 1345 UTC BECAUSE OF THE WEATHER CLOUDS COVERING THE
AREA.  ASH WAS MOST RECENTLY OBSERVED IN SATELLITE IMAGERY AT
ABOUT 17/0215 UTC AND THIS ASH HAD AN ESTIMATED HEIGHT OF
FL220.  THE APRIL 16 REPORT FROM THE GEOPHYSICAL INSTITUTE
INDICATED THE PRESENCE OF OCCASIONAL VOLCANIC EXPLOSIONS.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH THAT MIGHT
BE PRESENT BETWEEN THE SUMMIT AND FL220 WILL MOVE TO THE WEST
AT ABOUT 15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 17/2030 UTC.
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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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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