FVXX21 KWBC 140130
VOLCANIC ASH ADVISORY  
ISSUED 0130 UTC 14 JUN 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-694      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. WIND FORECAST FROM THE AVIATION MODEL.
GEOPHYSICAL INSTITUTE REPORT. SIGMETS FROM GUAYAQUIL
METEOROLOGICAL WATCH OFFICE.
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ERUPTION DETAILS: OCCASIONAL GAS AND ASH EMISSIONS.  
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DETAILS OF ASH: SATELLITE IMAGERY THROUGH 14/0045 UTC SHOWED
ONE VERY FAINT AREA OF ASH FROM THE VOLCANO THAT OCCURRED
AROUND 13/2215 UTC. THE LEADING EDGE OF THE AREA IS 135KM (73
NMI) FROM THE SUMMIT BETWEEN POINTS 0106S 7930W AND 0145S
7928W AND IS AROUND 33KM (18 NMI) WIDE. THE AREA IS ESTIMATED
AROUND FL270 AND MOVING WEST AROUND 25 KNOTS.
THE PREVIOUS AREAS FROM SMALL EMISSIONS FROM AROUND 1615 UTC
AND 1715 UTC BECAME TO FAINT TO DETECT AS THEY MOVED WEST. ALL
THE ASH AREAS BECAME MORE APPARENT IN MULTISPECTRAL IMAGERY AS
WATER VAPOR WITHIN THE AREA DISSIPATES DOWNWIND OF THE SUMMIT.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL270 WILL MOVE TO THE WEST AROUND 20 TO 25
KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BY 14/0730 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER 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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NNNN"Attached Graphic Map Depicting Ash" 

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