FVXX21 KWBC 011330
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1330 UTC 01 DEC 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-191       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..MULTISPECTRAL AND INFRARED 
IMAGERY.  AVIATION MODEL WIND FORECAST  REPORT FROM THE GEOFISICO
INSTITUTO.
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ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS AND OCCASIONAL
EXPLOSIONS OF ASH.
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DETAILS OF ASH: THE LATEST SATELLITE DATA THROUGH 01/1245 UTC SHOWS
A THIN PLUME EXTENDING TO THE NORTH AWAY FROM THE SUMMIT.  THE PLUME
IS 83 KM (45 NMI) IN LENGTH 9 KM (5 NMI) WIDE AND EXTENDS TO THE
POINT 0.7S 78.6W.   
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UPPER AIR PATTERNS SUGGEST THAT THE OBSERVED ASH IS AT FL320.
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TRAJECTORY: ASH IS MOVING TOWARD THE NORTH AT 10 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 01/1930 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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WALTER/SAB/NOAA/NESDIS
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