FVXX21 KWBC 091310
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VOLCANIC ASH ADVISORY
ISSUED 1310 UTC 09 NOV 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-096    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...GUAYAQUIL METEOROLOGICAL WATCH OFFICE...00 UTC AVIATION
NUMERICAL WEATHER MODEL WIND DATA...REPORT OF THE INSTITUTO
GEOFISICO 
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ERUPTION DETAILS: CONTINUOUS ASH VENTING AND POSSIBLY SOME
OCASSIONAL EXPLOSIONS.
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1215 UTC INDICATES THAT
THE LEVEL OF ASH ACTIVITY HAS INCREASED AT TUNGURAHUA. THE VISIBLE
AND MULTISPECTRAL IMAGES AT THIS TIME DO INDICATE A PLUME OF ASH
THAT IS LEAVING THE SUMMIT AND STREAKING TO THE SOUTHEAST. THE PLUME
EXTENDS 109 KM (59 NMI) SOUTHEAST TO A POINT AT -2S 77.5W AND IS 13
KM (7 NMI) WIDE. THE ASH IS ESTIMATED TO BE AT FL320. 0000 UTC
AVIATION MODEL SOUNDING DATA SUPPORTS THIS ALTITUDE.
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TRAJECTORY: SOUTHEAST AT 10 TO 20 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 09/1900 UTC.
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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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