FVXX21 KWBC 170300
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0300 UTC 17 APR 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-451        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...NATIONAL WEATHER SERVICE FORECAST MODEL DATA.
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ERUPTION DETAILS: NEARLY CONTINUOUS GAS EMISSIONS WITH
OCCASIONAL ASH EMISSIONS.
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DETAILS OF ASH: THERE WAS AN ASH AND STEAM PLUME THIS EVENING
LEAVING THE SUMMIT OF THE VOLCANO. OVER THE LAST 2 HOURS THE
APPEARANCE OF A PLUME BECAME DETECTABLE AS OTHER CLOUDINESS IN
THE REGION BEGAN TO DISSIPATE. THE ASH AND STEAM IS MOVING
SOUTHWEST OF THE SUMMIT AND IS ESTIMATED TO FL220. SATELLITE
IMAGERY AS OF 17/0215 UTC INDICATES MORE CLOUDINESS BEGINNING
TO BECOME MIXED WITH THE ASH.
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AT 0215 UTC THE ASH EXTENDS 73 KM (39 NMI) SOUTHWEST OF THE
SUMMIT TO THE POINT 0154S 7855W. THE ASH PLUME IS ESTIMATED TO
BE 19 KM (10 NMI) WIDE.

TRAJECTORY: ASH AND STEAM FROM THE SUMMIT TO FL220 IS EXPECTED
TO MOVE TO THE SOUTHWEST AT 10 TO 20 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 17/0900 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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ORRISON
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NNNN"Attached Graphic Map Depicting Ash" 

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