FVXX21 KWBC 192045
VOLCANIC ASH ADVISORY
ISSUED 2045 UTC 19 SEP 2000 BY THE WASHINGTON VAAC
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POPOCATEPETL 00-072  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 VISIBLE...INFRARED...AND
MULTISPECTRAL IMAGERY. MEXICO CITY METEOROLOGICAL WATCH
OFFICE.  1200 UTC MEXICO CITY RADIOSONDE. 
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ERUPTION DETAILS: SERIES OF EXHALATIONS BETWEEN 1930 UTC AND
2030 UTC.
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DETAILS OF ASH: THE MEXICO CITY METEOROLOGICAL WATCH OFFICE
REPORTS AN HOUR LONG SERIES OF EXHALATIONS THAT MIGHT HAVE
PRODUCED ASH TO AN UNKNOWN HEIGHT.  NO ASH CAN BE SEEN IN
GOES-8 IMAGERY THROUGH 2015 UTC BECAUSE OF THE DENSE WEATHER
CLOUDS COVERING THE AREA. CLOUDY CONDITIONS ARE ALSO LIMITING
GROUND BASED OBSERVATIONS.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH THAT MIGHT
EXIST AT SUMMIT LEVEL WOULD MOVE TOWARD THE NORTH AT ABOUT 10
KNOTS. 
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OUTLOOK: SEE SIGMETS.
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THE NEXT ADVISORY WILL BE ISSUED BY 20/0230 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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