FVXX21 KWBC 180639
VOLCANIC ASH ADVISORY
ISSUED: 2004JUL18/0638Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2004/024

INFORMATION SOURCE: GUAM MWO. GFS MODEL WINDS
FORECAST. GOES-9 IMAGERY. 0110Z MODIS TERRA
IMAGERY.

ERUPTION DETAILS: OCCASIONAL VENTING OF GASES AND
ASH

OBS ASH DATE/TIME: 18/0110Z

OBS ASH CLOUD: SFC/FL050 3NM WIDE LINE BETWEEN
N1617E14525 - N1620E14539. ASH IS MOVING W 10
KNOTS. 

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: A VERY FAINT ASH PLUME COULD BE SEEN IN
THE 0110Z VISIBLE MODIS IMAGERY.  THE PLUME
EXTENDED FROM THE SUMMIT TOWARD THE WEST SOUTHWEST
AND WAS ABOUT 15 NM LONG AND 3 NM WIDE.  NO
HOTSPOT CAN BE SEEN IN GOES IMAGERY. ...

NEXT ADVISORY: WILL BE ISSUED BY 2004JUL18/1245Z

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