FVXX22 KWBC 212145
VOLCANIC ASH ADVISORY
ISSUED 2145 UTC 21 SEP 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-1094        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. AVIATION MODEL WIND FORECAST.
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ERUPTION DETAILS: ASH EMISSION REPORTED AS OF 21/2125 UTC.
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DETAILS OF ASH CLOUD: THE GEOPHYSICAL INSTITUTE HAS REPORTED
AS OF 2125 UTC THAT AN ASH EMISSION HAS OCCURRED. ASH IS
REPORTED TO BE REACHING FL300 WITH A NORTHWEST MOVEMENT.
SATELLITE IMAGERY THROUGH 2115 UTC SHOWED ABSOLUTELY NO SIGNS
OF ASH. IT IS WORTH MENTIONING THOUGH THAT SOME RATHER
SIGNIFICANT SHOWER AND THUNDERSTORM ACTIVITY WAS HEADING FOR
THE SUMMIT AND WILL BE MOVING IN OVER THE NEXT HOUR. THIS
MEANS THAT THE LATEST ASH EMISSION WILL BECOME EMBEDDED WITHIN
THIS CLOUDINESS AND COULD EVEN RAIN OUT WITH THE
PRECIPITATION. CAUTION IS STRONGLY ADVISED. WILL CONTINUE TO
MONITOR.
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TRAJECTORY: ASH FROM THE SUMMIT TO FL300 SHOULD MOVE TO THE
NORTHWEST AT 10 TO 20 KNOTS. IT SHOULD BE NOTED THAT ASH NEAR
THE FL300 LEVEL WILL TEND MORE TO THE WEST BUT AT THE SAME
SPEED.
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OUTLOOK:  SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 22/0400 UTC.
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REAL TIME SATELLITE IMAGERY AND 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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ORRISON
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