FVXX21 KWBC 021245
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VOLCANIC ASH ADVISORY
ISSUED 1240 UTC 02 NOVEMBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-064      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...INSTITUTO
GEOFISICO IN ECUADOR...UPPER AIR WINDS FROM THE INSTITUTO GEOFISICO
...NUMERICAL MODEL WEATHER DATA FROM THE U.S. NATIONAL WEATHER
SERVICE.
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ERUPTION DETAILS:  OCCASIONAL WEAK TO MODERATE ERUPTIONS AND A
STEADY RELEASE OF ASH
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 1145 UTC SHOWS A NARROW
ASH PLUME EXTENDING FROM THE SUMMIT TOWARD THE SOUTHEAST. THE PLUME
IS APPROXIMATELY 50 KM (27 NMI) LONG AND REACHES THE POINT 1.8S
78.2W. THE PLUME IS ABOUT 10 KM (5 NMI) WIDE AND IS ESTIMATED TO BE
AT ABOUT FL380.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ASH BETWEEN FL350 AND
FL400 WILL MOVE TO THE SOUTHEAST AT 15 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 02/1845 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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