FVXX21 KWBC 230945
VOLCANIC ASH ADVISORY
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ISSUED: 2001DEC23/0945Z  VAAC: WASHINGTON
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VOLCANO: POPOCATEPETL 1401-09
LOCATION: 1901N 9837W    AREA: MEXICO
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SUMMIT ELEVATION: 17930 FT (5465 M) 
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ADVISORY NUMBER: 2001/123

INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL
IMAGERY...FORECAST UPPER LEVEL WINDS FROM AVIATION MODEL.
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ERUPTION DETAILS: ERUPTIONS AT 23/0730Z AND 22/2335Z. 
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DETAILS OF ASH CLOUD: MULTISPECTRAL SATELLITE IMAGERY INDICATED
THAT ANOTHER ERUPTION OF POPOCATEPETL OCCURRED AT 0730Z. 
ASH FROM THIS ERUPTION HAD DISSIPATED RAPIDLY BY 0915Z
NEAR 1910N9736W OR ROUGHLY 107 KM (58 NMI) TO THE EAST NORTHEAST
OF THE SUMMIT.  THIS ASH WAS ESTIMATED TO BE BELOW FL220.
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ASH FROM THE 22/2325Z ERUPTION WAS DETECTED IN SATELLITE IMAGERY
BETWEEN 1730N9450W AND 1710N9454W OR ROUGHLY 439 KM (237 NMI) TO
THE SOUTHEAST OF THE SUMMIT.  THE ASH CLOUD WAS 33 KM (18 NMI)
WIDE AND ESTIMATED TO BE UP TO FL250.
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TRAJECTORY: ANY ASH THAT MIGHT STILL EXIST EAST NORTHEAST OF THE
VOLCANO TO FL220 WOULD MOVE TOWARDS THE EAST NORTHEAST AT 15 TO
25 KNOTS.  ASH TO FL250 FROM THE EARLIER ERUPTION CONTINUED TO
MOVE TOWARDS THE SOUTHEAST AT APPROXIMATELY 20 KNOTS. 
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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NEXT ADVISORY: WILL BE ISSUED BY 2001DEC23/1600Z.
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TURK  
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NNNN"Attached Graphic Map Depicting Ash Only" 

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