FVXX22 KWBC 231630 CCA
VOLCANIC ASH ADVISORY - CORRECTION
ISSUED: 2001JAN23/1630Z   VAAC: WASHINGTON
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CORRECTED FOR HEIGHT OF REMNANTS OF ASH FROM THE CONTINUOUS
EMISSION.
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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: 2001/18
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INFORMATION SOURCE: GOES-8 VISIBLE...INFRARED...AND MULTISPECTRAL
IMAGERY. THE MEXICO CITY MET WATCH OFFICE. 12Z UPPER AIR SOUNDINGS
FROM MEXICO CITY AND BELIZE INTERNATIONAL AIRPORT.
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ERUPTION DETAILS: EXPLOSIVE ERUPTIONS AT 22/2245Z...23/0015Z...AND
23/1441Z. CONTINUOUS ASH EMISSIONS BETWEEN EXPLOSIONS.
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DETAILS OF ASH CLOUD(S): ANALYSIS FROM THE GOES-8 1602Z IMAGE...ASH
CLOUD FROM 23/1441Z...HEIGHT ESTIMATE NOW LOWERED TO FL250. THIS
CLOUD IS 37 KM (20 NMI) LONG AND 27 KM (15 NMI) WIDE TO POINT 1843N
9831W. 
ASH CLOUDS FROM 22/2345Z AND 23/0015Z...THE LEADING EDGE OF THE ASH
CLOUD IS OBSERVED MOVING EAST INTO THE CARIBBEAN SEA OVER BELIZE.
THIS CLOUD IS BOUND BY POINTS 1822N8811W 1721N8743W 1624N8753W
1628N8833W 1742N8924W 1759N9131W 1736N9244W 1801W9304W 1826N9241W.
THE EASTERN END OF THIS ASH IS ESTIMATED TO BE AT FL300...THE
WESTERN EDGE BETWEEN FL250 AND FL300.
REMNANTS OF ASH FROM THE CONTINUOUS EMISSION IS BOUND BY POINTS
1813N9904W 1800N9738W 1711N9814W 1713N9913W 1753N9920W 1744N9829W.
THIS CLOUD APPEARS TO BE BANKED ALONG THE NORTH EDGE OF THE SIERRA
MADRE DEL SUR AND REMAINS STATIONARY.  IT IS ESTIMATED TO BE AT
FL120 AND HAS BEEN DISSIPATING STEADILY.  
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TRAJECTORY: ASH FROM 23/1441Z AT FL250 IS MOVING SOUTH SOUTHEAST AT
10 TO 15 KNOTS. ASH FROM EARLIER ERUPTIONS OVER SOUTHEAST MEXICO
BETWEEN FL250 AND FL300 IS MOVING SOUTHEAST AT 20 TO 25 KNOTS AND
ASH OVER THE WESTERN CARIBBEAN SEA IS MOVING EAST SOUTHEAST AT 30 TO
35 KNOTS. 
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OUTLOOK:  SEE SIGMETS AND VAFTAD.
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THE NEXT ADVISORY WILL BE ISSUED AROUND 23/2230Z.
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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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HUGHES/TURK
NNNN"Attached Graphic Map Depicting Ash" 

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