FVXX21 KWBC 221530
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1530 UTC 22 FEB 2000 BY THE WASHINGTON VAAC 
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TUNGURAHUA 00-225         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: THE GEOPHYSICAL INSTITUTE IN QUITO. GOES-8   VISIBLE
INFRARED AND MULTISPECTRAL IMAGERY. 22/1800 UTC AVIATION MODEL WINDS.
SURFACE OBSERVATION AT GUAYAQUIL.
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ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM.
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DETAILS OF ASH: NO ASH COULD BE SEEN IN GOES-8 IMAGERY THROUGH 1445 UTC DUE
TO STRONG CONVECTION LOCATED JUST EAST OF TUNGURAHUA. GUAYAQUIL OBSERVATION
AT 1200 UTC REPORTS VOLCANIC ASH OVER THE REPORTING SITE. THE GEOPHYSICAL
INSTITUTE REPORTS THAT TUNGURAHUA HAS BEEN RELATIVELY QUIET FOR THE PAST
THREE DAYS. THE VOLCANO REMAINS IN A VERY ACTIVE STATE AND COULD ERUPT AT
ANYTIME. GOES-8 (AND 10) WILL POSSIBLY GO INTO RAPID SCAN OPERATIONS LATER
TODAY LIMITING THE DETECTION OF ASH BELOW THE EQUATOR. DETAILS WILL FOLLOW
IN SUBSEQUENT STATEMENTS.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH UP TO FL200 TO MOVE WEST AT 5
TO 10 KNOTS. ASH BETWEEN FL200 AND FL300 WOULD MOVE WEST AT 10 TO 15 KNOTS.
ASH ABOVE FL300 WOULD MOVE NORTHWEST AT 10 TO 15 KNOTS.
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OUTLOOK: SEE SIGMETS.
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THE NEXT STATEMENT WILL BE ISSUED BY 22/2130 UTC.
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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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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES-NOAA/NESDIS/SAB
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