FVXX21 KWBC 181854
VOLCANIC ASH ADVISORY
ISSUED: 2004JUL18/1854Z   VAAC: WASHINGTON

VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540   AREA: MARIANA.ISLANDS

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2004/

INFORMATION SOURCE: GFS MODEL WINDS FORECAST.
GOES-9 IMAGERY. 

ERUPTION DETAILS: OCCASIONAL VENTING OF GASES AND
ASH

OBS ASH DATE/TIME: 18/1802Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL050 MOVING TO W 15 KNOTS.

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: IT IS DIFFICULT TO DETECT LOW LEVEL ASH
IN INFRARED IMAGERY.  ...KARST

NEXT ADVISORY: WILL BE ISSUED BY 2004JUL19/0100Z

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