FVXX20 KWBC 232130
VOLCANIC ASH ADVISORY STATEMENT 
ISSUED 2130 UTC 23 MAY 2000 BY THE WASHINGTON VAAC
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POPOCATEPETL 00-025        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.  MEXICO CITY METEOROLOGICAL WATCH
OFFICE. CENAPRED VOLCANO CAM. MEXICO CITY UPPER AIR SOUNDING. 
12 HOUR WIND FORECAST FROM THE 23/1200 UTC AVIATION MODEL.
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ERUPTION DETAILS: ERUPTION AT 23/1430 UTC AND A MODERATE
EXHALATION AT 23/1910 UTC.
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DETAILS OF ASH CLOUD: NO ASH CAN BE SEEN IN SATELLITE IMAGERY
THROUGH 23/2045 UTC DUE TO THE DENSE WEATHER CLOUDS COVERING
THE AREA.  SHORTLY AFTER THE 1430 UTC ERUPTION A SMALL ASH
PLUME AT ABOUT FL320 WAS OBSERVED MOVING TO THE NORTHWEST BUT
THE AREA IS NOW TOO CLOUDY TO VIEW THIS ASH.  AT 1910 UTC AN
EXHALATION WAS REPORTED AND OBSERVERS ON THE GROUND BELIEVE IT
PRODUCED A SMALL AMOUNT OF ASH BUT AGAIN CLOUDS PREVENTED
SATELLITE DETECTION AND THE HEIGHT OF THIS ASH IS UNKNOWN.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST THAT ANY ASH BETWEEN
THE SUMMIT AND FL320 WOULD MOVE TOWARD THE WEST AT LESS THAN
10 KNOTS.
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OUTLOOK:  SEE SIGMETS AND VAFTAD
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THE NEXT STATEMENT WILL BE ISSUED BY 24/0330 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC
ASH ADVISORY STATEMENTS 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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