FVXX20 KWBC 140855
VOLCANIC ASH ADVISORY
ISSUED: 2000DEC14/0855Z    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: 2000/172
                                                              
INFORMATION SOURCE: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY.
MEXICO CITY MWO. CENAPRED. 0000Z MEXICO CITY UPPER AIR
SOUNDINGS.
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ERUPTION DETAILS: CONTINUOUS EXHALATIONS OF ASH SINCE 0159Z. 
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DETAILS OF ASH CLOUD: MULTISPECTRAL SATELLITE IMAGERY THROUGH
0715Z HAS SHOWN CONTINUOUS EXHALATIONS OF ASH OVER THE PAST 6 
HOURS.  ASH IS BOUNDED BY THE SUMMIT 1911N 9849W 1931N 9853W
1911N 9911W AND IS APPROACHING MEXICO CITY.  THIS AREA EXTENDS
APPROXIMATELY 62KM (33 NMI) FROM TH SUMMIT AND IS UP TO 44KM
(23NMI) WIDE. ASH IS ESTIMATED AT FL210.  MOVEMENT IS
NORTHWEST AT 5-10 KNOTS.

ASH FROM THE EARLIER ERUPTIONS HAS BECOME VERY DIFFICULT TO
DISCERN.  THIS AREA IS VERY APPROXIMATELY BOUND BY 1945N 9802W
2000N 9718W 2047N 9723W 2047N 9812W.  THIS AREA IS
APPROXIMATELY 115KM (62NMI) LONG AND 85KM (45 NMI) WIDE. 
HEIGHT WAS EARLIER ESTIMATED AT FL320. MOVEMENT IS EAST
NORTHEAST AT 15-20 KNOTS.
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TRAJECTORY: THE ASH AT FL320 IS MOVING TO THE EAST NORTHEAST
AT ABOUT 15 TO 20 KNOTS. THE ASH AT FL210 IS MOVING TOWARD THE
NORTHWEST AT ABOUT 5-10 KNOTS. 
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BY 14/1500Z.

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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"Attached Graphic Map Depicting Ash" 

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