FVXX20 KWBC 041835
VOLCANIC ASH ADVISORY
ISSUED 1835 UTC 04 AUG 2000 BY THE WASHINGTON VAAC
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POPOCATEPETL 00-053  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 VISIBLE ... INFRARED...AND
MULTISPECTRAL IMAGERY. THE 000Z UTC FORECAST FROM THE AVIATION
MODEL. MEXICO CITY MWO.
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ERUPTION DETAILS: ERUPTION AT 04/1755 UTC
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DETAILS OF ASH CLOUD: THE FIRST VISIBLE AND INFRARED GOES-8
IMAGERY AFTER THE ERUPTION SHOWS A SMALL ASH PLUME TO THE WEST
OF THE VOLCANO.  THE MEXICO CITY MWO RECEIVED AN AIRCRAFT
REPORT OF AN ERUPTION TO FL330 WHICH WAS CONFIRMED BY BOTH
PUEBLA AND A SECOND AIRCRAFT REPORT.  
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ASH FROM THE SUMMIT TO
FL250 WOULD MOVE WEST AT UP TO 15 KTS. ABOVE FL300 WOULD MOVE
SOUTH TO SOUTHEAST AT UP TO 15 KTS. WINDS BETWEEN FL250 AND
FL300 ARE LIGHT AND VARIABLE.
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 05/0030 OR SOONER IF
ADDITIONAL INFORMATION BECOMES AVAILABLE.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER 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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