FVXX21 KWBC 211415
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VOLCANIC ASH ADVISORY STATEMENT
ISSUED 1415 UTC 21 MAR 1999 BY THE WASHINGTON VAAC
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POPOCATEPETL 99-042    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: GOES-8 MULTISPECTRAL IMAGERY...MEXICO CITY
MWO...SURFACE OBSERVATIONS FROM PUEBLA MEXICO     
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ERUPTION DETAILS: EXHALATION AT APPROXIMATELY 21/1335 UTC
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DETAILS OF ASH CLOUD: THE MEXICO CITY MWO HAS ALERTED US OF ANOTHER
EXHALATION OF ASH FROM THE POPOCATEPETL VOLCANO.  MEXICO CITY
INDICATED THAT THE ASH PLUME WAS APPROXIMATELY 800 M (2625 FT) ABOVE
THE SUMMIT.  A SURFACE OBSERVATION FROM PUEBLA AT 1340 UTC INDICATED
ASH TO FL220.  THE POPO CAMERA CONTINUES TO SHOW ASH VENTING AT 1410
UTC.
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TRAJECTORY: MEXICO CITY AND PUEBLA BOTH NOTED A MOVEMENT TOWARD THE
SOUTHEAST.                   
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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 STATEMENT WILL FOLLOW WITHIN THE HOUR AFTER ADDITIONAL
SATELLITE DATA HAS BEEN ANALYZED.
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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