FVXX21 KWBC 190630
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 0630 UTC 19 MAY 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-586         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.  MAY 18 GEOPHYSICAL INSTITUTE REPORT.  WIND FORECAST
FROM THE AVIATION MODEL. SIGMET FROM THE GUAYAQUIL
METEOROLOGICAL WATCH OFFICE.
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS AND OCCASIONAL ASH
EMISSIONS.   
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DETAILS OF ASH: VISIBLE SATELLITE IMAGERY AT 18/2215 UTC
SHOWED A NARROW ASH PLUME EXTENDING FROM THE SUMMIT TOWARD THE
WEST. HOWEVER DUE TO INCREASING WEATHER CLOUDS ASH CAN NO
LONGER BE DETECTED IN SATELLITE IMAGERY THROUGH 19/0545 UTC. 
THE MOST RECENT AVAILABLE ASH HEIGHT DETERMINATION WAS AN
18/1503 UTC OBSERVATION BY THE GEOPHYSICAL INSTITUTE OF
PROBABLE ASH TO FL260.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL260 WOULD MOVE TOWARD THE WEST AT ABOUT 15
KNOTS. 
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 19/1230 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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