FVXX21 KWBC 151200
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1200 UTC 15 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-121         ECUADOR 1.47S 78.44W 
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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...WIND DATA FROM THE INSTITUTO GEOFISCIO IN QUITO AND
NATIONAL WEATHER SERVICE NUMERICAL MODELS
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ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS
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DETAILS OF ASH: GOES 8 MULTISPECTRAL IMAGERY THROUGH 1115 UTC SHOWS 
A SMALL ASH PLUME.  THIS ASH WAS NOT VISIBLE THROUGH 1045 UTC.  A
HOT SPOT WAS VISIBLE IN THE CIRA REFLECTIVITY IMAGE IN BOTH THE 0945
UTC AND 1015 UTC IMAGES.  THE CURRENT ASH PLUME IS ESTIMATED TO BE
AT FL250 AND IS 53 KM (29 NMI) TO THE NORTH NORTHWEST OF THE SUMMIT
(162 DEGREES) AND IS 26 KM (14 NMI) WIDE AT THE WIDEST POINT.  THIS
PLUME IS ROUGHLY BOUNDED BY 1.47S 78.44W TO 1.32S 78.28W TO 1.03S
78.46W TO 1.03S 78.63W AND 1.34S 78.65W.
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TRAJECTORY: ASH UP TO FL250 WOULD MOVE NORTH NORTHWEST AT 15 TO 25
KNOTS.
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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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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 15/1800 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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NNNN
"Attached Graphic Map Depicting Ash" 

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