FVXX21 KWBC 301915
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1915 UTC 30 NOV 1999 BY THE WASHINGTON VAAC
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TUNGURAHUA 99-188 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 MULTISPECTRAL AND INFRARED SATELLITE
IMAGERY THROUGH 1845 UTC...REPORT FROM THE GEOFISICO
INSTITUTO...AVIATION MODEL WIND FORECAST.
ERUPTION DETAILS: CONTINUOUS STEAM AND ASH EMISSIONS AND OCCASIONAL
EXPLOSIONS OF ASH.
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DETAILS OF ASH: GOES-8 SATELLITE IMAGERY THROUGH 1845 UTC SHOWS A
NARROW ASH PLUME ABOUT 5 NMI WIDE EXTENDING FROM THE VOLCANO TO
0.15S 78.8W. THIS IS ABOUT 35 NMI TO THE WEST-NORTHWEST OF THE
VOLCANO. DIFFUSE ASH PROBABLY EXTENDS FURTHER TO THE WEST-NORTHWEST.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ASH AT FL250 WOULD MOVE
TOWARD THE WEST-NORTHWEST AT ABOUT 15 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 01/0130 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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