FVXX22 WBC 161319
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1323 UTC 16 May 1999 BY THE WASHINGTON VAAC
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POPOCATEPETL 99-065   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: MEXICO CITY METEOROLOGICAL WATCH
OFFICE...CENAPRED...PIREP...GOES-8 VISIBLE AND INFRARED
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ERUPTION DETAILS: LAST ERUPTION AT 16/1226 UTC.
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DETAILS OF ASH CLOUD: MEXICO CITY HAS ISSUED SIGMET 1A. AN
OBSERVATION AT 16/1230 UTC HAD ASH 10NM SSW BETWEEN FL180 AND FL210.
GOES-8 VISIBLE SATELLITE IMAGERY AT 1302 UTC SHOWS MIDDLE AND HIGH
LEVEL CLOUDS OVER THE AREA. WE ARE UNABLE TO DETECT ANY ASH. 
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TRAJECTORY: ANY ASH FROM FL180 TO FL210 WOULD MOVE TOWARDS THE
SOUTHWEST AT LESS THAN 20 KTS. 
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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/messages.html
(all lower case except /VAAC/)
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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NEXT MESSAGE WILL BE ISSUED BY 16/1900 UTC.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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