FVXX20 KWBC 300930
VOLCANIC ASH ADVISORY 
ISSUED 0930 UTC 30 OCT 2000 BY THE WASHINGTON VAAC
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POPOCATEPETL 00-099         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. MEXICO CITY
UPPER AIR SOUNDING.
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ERUPTION DETAILS: ASH EXHALATION AT 29/2315 UTC. 
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DETAILS OF ASH CLOUD: ASH WAS NO LONGER DISCERNIBLE ON CHAN4-
CHAN5 MULTISPECTRAL SATELLITE IMAGERY THROUGH 30/0845 UTC.
HOWEVER THERE CONTINUES TO BE AN ENHANCED AREA OF POSSIBLE
FAINT ASH IN PCI IMAGERY. AT 30/0845 UTC THIS AREA WAS LOCATED
ABOUT 140 KM (76 NMI) TO THE NORTHWEST OF THE SUMMIT AND WAS
ABOUT 113 KM (61 NMI) WIDE. IN ADDITION A HOT SPOT AT THE
SUMMIT WAS DETECTED IN RECENT IMAGERY. THE MEXICO CITY MWO
ESTIMATED THE HEIGHT OF THE ASH TO FL280 AT THE TIME OF THE
ERUPTION.  
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TRAJECTORY: ANY ASH FROM SUMMIT LEVEL TO FL280 WOULD MOVE
TOWARD THE NORTH AT ABOUT 10 TO 15 KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BEFORE 30/1530 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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CLARK
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