FVXX21 KWBC 041935
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1935 UTC 04 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-400         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. UPPER WIND FORECAST FROM THE 1200 UTC
AVIATION MODEL.
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.
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DETAILS OF ASH: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 04/1845 UTC. CLOUDS HAVE BROKEN UP ALLOWING SOME CLEAR
SPOTS AROUND THE VOLCANO IN THE PAST 1 TO 2 HOURS BUT
EXTENSIVE CLOUDS COVERED THE REGION EARLIER IN THE DAY. THE
LAST CONFIRMED REPORT OF ASH WAS TO FL230 AROUND 0000 UTC ON 3
APRIL.
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TRAJECTORY: UPPER AIR PATTERNS FROM THE AVIATION MODEL SUGGEST
THAT ANY ASH BETWEEN THE SUMMIT AND FL230 WOULD MOVE TOWARD
THE SOUTHWEST AT 10 TO 15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 05/0130 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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RUMINSKI
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