FVXX20 KWBC 311647
VOLCANIC ASH ADVISORY
ISSUED: 2004JUL31/1646Z   VAAC: WASHINGTON

VOLCANO: COLIMA 1401-04
LOCATION: N1931W10337   AREA: MEXICO

SUMMIT ELEVATION: 12631 FT (3850 M)

ADVISORY NUMBER: 2004/048

INFORMATION SOURCE: MEXICO CITY MWO. GOES-12
IMAGERY. GFS MODEL WINDS FORECAST. 

ERUPTION DETAILS: COLIMA TOWER OBSERVED AN
EXHALATION WITH ASH. 

OBS ASH DATE/TIME: 31/1615Z

OBS ASH CLOUD: SFC/FL350 N1940W10336 - N1935W10331
- N1928W10334 - N1926W10336 - N1930W10337 -
N1938W10339 - N1940W10336 MOVING E 10 KNOTS. 

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: ASH IS SPREADING FROM THE VOLCANO TOWARD
THE NORTHEAST EAST AND SOUTHEAST.  THE ASH IS
FIRST SEEN IN SATELLITE IMAGERY BETWEEN 1530Z AND
1545Z.  THE COLIMA TOWER ESTIMATES THE HEIGHT TO
BE FL350. THE ASH IS EASILY SEEN IN VISIBLE
IMAGERY BUT IS VERY FAINT IN INFRARED AND
MULTISPECTRAL IMAGERY SO THE ASH HEIGHT MAY BE
SOMEWHAT LOWER THAN FL350. ...

NEXT ADVISORY: WILL BE ISSUED BY 2004JUL31/2245Z

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