FVXX20 KWBC 131805
VOLCANIC ASH ADVISORY
ISSUED: 2000DEC13/1805Z    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: 2000/169
                                                              
INFORMATION SOURCE: GOES-8 VISIBLE..INFRARED AND MULTISPECTRAL
IMAGERY. MEXICO CITY MWO. CENAPRED CAMERA. 1200Z MEXICO CITY
AND MERIDA UPPER AIR SOUNDINGS.
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ERUPTION DETAILS: CONTINUOUS VENTING OF ASH SINCE ABOUT 1600Z.
ERUPTIONS AT 0645Z AND 2207Z.
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DETAILS OF ASH CLOUD: MULTISPECTRAL SATELLITE IMAGERY THROUGH
1715Z SHOWS A DENSE AREA OF ASH EXTENDING FROM THE VOLCANO TO
THE EAST SOUTHEAST. IN ADDITION THERE IS A LARGER AREA OF
FAINTER ASH MIXED WITH CLOUDS LOCATED TO THE NORTHEAST OF THE
SUMMIT. THESE AREAS OF ASH ARE ESTIMATED UP TO FL320. THE
DENSE AREA IS TO THE EAST SOUTHEAST OF THE SUMMIT CENTERED AT
1852N9831W AND IS 23 KM (12 NMI) IN DIAMETER. THE LARGER AREA
OF FAINT ASH MIXED WITH CLOUDS EXTENDS 147 KM (79 NMI) FROM
THE SUMMIT TO THE NORTHEAST AND IS BOUNDED BY 1850N9842W
1855N9805W 1929N9735W 1944N9739W AND 1936N9856W.   
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ASH FROM THE EARLIER ERUPTIONS IS STILL DISCERNIBLE IN
MULTISPECTRAL IMAGERY OVER THE GULF OF MEXICO.  THE FAINT AREA
OF ASH EXTENDS ABOUT 203 KM (110 NMI) FROM 2305N9124W TO
2410N8948W AND IS ABOUT 44 KM (24 NMI) WIDE. THIS ASH IS
ESTIMATED UP TO FL300.
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TRAJECTORY: DENSE ASH TO FL320 IS MOVING FROM THE SUMMIT TO
THE EAST SOUTHEAST AT ABOUT 15 TO 25 KNOTS. FAINT ASH OVER THE
GULF IS MOVING TOWARD THE EAST NORTHEAST AT ABOUT 10 KNOTS. 
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BY 14/0000Z.

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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NNNN    
"Attached Graphic Map Depicting Ash" 

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