FVXX21 KWBC 020700
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VOLCANIC ASH ADVISORY
ISSUED 0700 UTC 02 NOVEMBER 1999 BY THE WASHINGTON VAAC 
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TUNGURAHUA 99-063      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 INFRARED AND MULTISPECTRAL
IMAGERY...GUAYAQUIL METEOROLOGICAL WATCH OFFICE...INSTITUTO
GEOFISICO IN ECUADOR...UPPER AIR WINDS FROM THE INSTITUTO GEOFISICO
AND 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: AT 0615 UTC SATELLITE IMAGERY SHOWS FAIRLY FAINT ASH
AT ABOUT FL400 EXTENDING FROM THE SUMMIT TOWARD THE SOUTH SOUTHEAST. 
THIS PLUME EXTENDS 135 KM (73 NMI) FROM THE SUMMIT AND REACHES THE
POINT 2.5S 77.8W.  THE PLUME IS APPROXIMATELY 31 KM (17 NMI) WIDE.
   THE PLUME OBSERVED EARLIER TONIGHT MOVING TOWARD THE WEST IS NOW
TOO FAINT TO BE SEEN IN SATELLITE IMAGERY AND MIGHT ALSO BE OBSCURED
BY THE LOW AND MID-LEVEL METEOROLOGICAL CLOUDS IN THE AREA.
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TRAJECTORY: ASH AT FL400 IS MOVING TOWARD THE SOUTH SOUTHEAST AT 20
TO 25 KNOTS. LOWER ASH AT ABOUT FL260 IS NOW TOO FAINT TO BE SEEN IN
IMAGERY BUT WAS PREVIOUSLY OBSERVED TO BE MOVING WEST-NORTHWEST 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 02/1300 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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