FVXX22 KWBC 201512 CCA
VOLCANIC ASH ADVISORY CORRECTION
ISSUED 1500 UTC 20 SEP 2000 BY THE WASHINGTON VAAC
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CORRECTION TO UPPER AIR FORECAST DATE
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TUNGURAHUA 00-1088        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. 20/1200 UTC UPPER WIND FORECAST FROM
THE 20/0600 UTC AVIATION MODEL.
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ERUPTION DETAILS: ASH EMISSION AT APPROX 1400 UTC. 
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DETAILS OF ASH CLOUD: GOES-8 IMAGERY THROUGH 1445 UTC SHOWS A
SMALL DETACHED A POSSIBLE ASH CLOUD MOVING TO THE NORTHWEST
FROM TUNGURAHUA. THIS CLOUD IS APPROX 18 KM (10 NMI) LONG FROM
POINT 0127S 7832W TO POINT 0124S 7841W AND IS 7 KM (4 NMI)
WIDE. THIS CLOUD IS ESTIMATED TO BE AT FL250.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH UP TO FL250 TO
MOVE NORTHWEST AT 5 TO 10 KNOTS.
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OUTLOOK:  SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 20/2100 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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HUGHES
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NNNN"Attached Graphic Map Depicting Ash" 

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