FVXX21 KWBC 200230
VOLCANIC ASH ADVISORY
ISSUED 0230 UTC 20 SEP 2000 BY THE WASHINGTON VAAC
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POPOCATEPETL 00-073  MEXICO 1901N 9837W 
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BACKGROUND:    POPOCATEPETL MEXICO (1401-09)
               SUMMIT HEIGHT 17930 FT (5465 M)
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SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY. MEXICO CITY METEOROLOGICAL WATCH OFFICE.  
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ERUPTION DETAILS: SERIES OF EXHALATIONS TO UNKNOWN HEIGHT.
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DETAILS OF ASH: THE MEXICO CITY METEOROLOGICAL WATCH OFFICE
HAD REPORTED A SERIES OF EXHALATIONS THAT MIGHT HAVE PRODUCED
ASH TO AN UNKNOWN HEIGHT. DUE TO DENSE CLOUDS OVER THE VOLCANO
NO ASH CAN BE SEEN IN GOES-8 IMAGERY THROUGH 0145 UTC. 
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH AT NEAR
SUMMIT LEVEL WOULD MOVE TOWARD THE NORTH AT ABOUT 10 KNOTS. 
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE SENT AT 20/0830 UTC.
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REAL TIME SATELLITE IMAGERY AND VOLCANIC ASH ADVISORIES 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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