FVXX22 KWBC 120000
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0000 UTC 12 NOV 1999 BY THE WASHINGTON VAAC 
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POPOCATEPETL 99-105    MEXICO 19.02N 98.62W 
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BACKGROUND:    POPOCATEPETL MEXICO (1401-09)
               SUMMIT HEIGHT 17930 FT (5465 M)
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SOURCES OF INFORMATION:  GOES-8 VISIBLE...INFRARED...AND
MULTISPECTRAL IMAGERY. MEXICO CITY MET WATCH OFFICE AND CENAPRED
VOLCANO RESEARCH CAMERA. U.S. NUMERICAL MODEL WIND DATA.
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ERUPTION DETAILS:   THE MEXICO CITY MWO REPORTED A SMALL ERUPTION OF
STEAM AND ASH AT 1725 UTC TO FL180.
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DETAILS OF ASH CLOUD: NO ASH COULD BE SEEN IN EITHER GOES-8
SATELLITE IMAGERY OR THROUGH THE POCATEPETL RESEARCH CAMERA. THERE
IS CONVECTIVE CLOUDS IN THE IMMEDIATE AREA SO THE DETECTION OF ASH
IF ANY IS VERY DIFFICULT.  
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TRAJECTORY: NUMERICAL MODEL WIND DATA SUGGEST ANY ASH AT OR BELOW
FL180 WOULD MOVE WEST NORTHWEST AT 5 TO 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  
www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE LATEST SIGMETS.
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THIS WILL BE THE LAST STATEMENT ISSUED FOR THIS EVENT.      
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES - NOAA/NESDIS/SAB
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