FVXX21 KWBC 310300
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 0300 UTC 31 MAR 1999 BY THE WASHINGTON VAAC
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POPOCATEPETL 99-054    MEXICO  19.02N 98.62W
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BACKGROUND:    POPOCATEPETL   MEXICO (1401-09)
               SUMMIT HEIGHT 17930 FT (5465 M)
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SOURCES OF INFORMATION: MEXICO CITY MWO AND CENAPRED GOES8 INFRARED
AND MULTISPECTRAL.  0000Z UTC MEXICO CITY UPPER AIR SOUNDING
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ERUPTION DETAILS: ERUPTED AT APPROXIMATELY 31/0158 UTC
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DETAILS OF ASH CLOUD: THE MEXICO CITY METEOROLOGICAL WATCH OFFICE
REPORTED AN ERUPTION OF POPO TO FL250.  THE LEADING EDGE OF THE
PLUME IS TO THE EAST AT 19.06N 98.38W AT 0215 UTC AND IS 15 KM (8
NMI) FROM THE VOLCANO. THE PLUME IS 10 KM (5 NMI) WIDE. 
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TRAJECTORY: THE 0000Z UTC UPPER AIR SOUNDING SUGGESTS THAT ASH
BETWEEN FL 180 AND FL250 WOULD MOVE TO THE EAST AT 25 TO 30KTS. 
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THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY
A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS
www.ssd.noaa.gov/VAAC/messages.html
(all lower case except /VAAC/)
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OUTLOOK: SEE SIGMETS.
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THE NEXT MESSAGE WILL BE AT 31/0900 UTC..
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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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