FVXX20 KWBC 202000
VOLCANIC ASH ADVISORY
ISSUED: 2000DEC20/2000Z  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: 2000/202
                                                              
INFORMATION SOURCE: GOES-8 VISIBLE ... INFRARED AND
MULTISPECTRAL IMAGERY.  POPOCATEPETL CAM. 12Z UPPER AIR DATA
FROM MEXICO CITY. 
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ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH
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DETAILS OF ASH CLOUD: SATELLITE IMAGERY THROUGH 1845Z SHOWS
SOME MINOR VENTING OF ASH AND STEAM. ASH FROM RECENT ERUPTION
ACTIVITY CURRENTLY COVERS A VERY LARGE AREA FROM WESTERN
MEXICO TO THE NORTHERN YUCATAN PENINSULA.
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ASH BETWEEN THE SUMMIT AND FL240 IS ROUGHLY BOUNDED BY
1957N6958W TO 1940N9813W TO 1819N9840W TO 1739N10505W TO
1560N10100W TO 1507N10006W AND 1723N9544W.  WITHIN THIS AREA
IS THICK ASH BOUNDED BY 1755N9628W TO 1810N9748W TO 1747N9820W
AND 1731N9752W.
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ASH AT FL320 IS ROUGHLY BOUNDED BY THE FOLLOWING POINTS:
1957N6958W TO 2044N9107W TO 2012N8829W TO 1938N8801W TO
1831N8811W TO 1731N8911W TO 1732N9031W AND 1723N9544W.
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TRAJECTORY: ASH FROM THE SUMMIT TO FL240 IS MOVING GENERALLY
SOUTH TO SOUTHWEST AT LESS THAN 10 KNOTS.  ASH FROM FL240 TO
FL320 IS MOVING EASTERLY AT 15-25 KNOTS. 
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT MESSAGE WILL BE ISSUED BY 21/0200Z.
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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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NNNN"Attached Graphic Map Depicting Ash" 

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