FVXX20 KNES 071311
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG07/1310Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/643

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS

OBS ASH DATE/TIME: 07/1202Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL100 MOVING TO W 10-15 KNOTS.
FL120/FL180 MOVING TO NW 5-10 KNOTS.

FCST ASH CLOUD +6H: 07/1800Z 

FCST ASH CLOUD +12H: 08/0000Z 

FCST ASH CLOUD +18H: 08/0600Z 

REMARKS: SINCE ABOUT 08Z THE PRESENCE OF WEATHER
CLOUDS HAS PREVENTED SATELLITE DETECTION OF ASH. 
PRIOR TO THAT TIME A 20 NM WIDE ASH PLUME TO FL180
WAS SEEN EXTENDING TOWARD THE WEST OR WEST
NORTHWEST.  IN THE NEXT 18 HOURS ANY PLUME BELOW
FL180 IS EXPECTED TO EXTEND TO THE WEST 
NORTHWEST.   ...

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG07/1915Z

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