FVXX21 KWBC 071630
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 1620 UTC 07 MAY 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-537         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.  12 HOUR WINDS FORECAST FROM THE 06 UTC
AVIATION MODEL. GUAYAQUIL METEOROLOGICAL WATCH OFFICE SIGMET
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.   
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 07/1545 UTC SHOWS
WEATHER CLOUDS OVER THE AREA MAKING DETECTION OF ASH
DIFFICULT.  A GUAYAQUIL MWO SIGMET INDICATES THAT AT 07/1225
UTC THE INSTITUTO GEOFISICO REPORTED A PROBABLE VOLCANIC ASH
CLOUD OVER THE VOLCANO AND MOVING WESTWARD.  WE HAVE NO HEIGHT
INFORMATION FOR THIS ASH.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL25O WOULD MOVE TOWARD THE WEST AT 10 TO 20
KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 07/2230 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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