FVXX20 KNES 081751
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG08/1750Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/649

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
GASES

OBS ASH DATE/TIME: 08/1649Z

OBS ASH CLOUD: SFC/FL200 30NM WIDE LINE BETWEEN
N1740E14313 - N1620E14541. ASH IS MOVING NW 20-25
KNOTS. 

FCST ASH CLOUD +6H: 08/2300Z SFC/FL200 40NM WIDE
LINE BETWEEN N1830E14113 - N1617E14542. 

FCST ASH CLOUD +12H: 09/0500Z SFC/FL200 40NM WIDE
LINE BETWEEN N1755E14059 - N1617E14544. 

FCST ASH CLOUD +18H: 09/1100Z SFC/FL200
N1853E13938 - N1620E14543 - N1558E14400 -
N1537E14005 - N1853E13938 

REMARKS: THE CLOUDS HAVE SCATTERED AND ASH IS
AGAIN DETECTABLE.  A PLUME CAN BE SEEN EXTEND
AROUND 150 NM NORTHWEST FROM THE ISLAND BEFORE
GOING UNDER THE CLOUDCOVER.  NO ASH CAN BE SEEN
SOUTHWEST OF THE ISLAND AS SUGGESTED EARLIER BASED
ON MODEL WINDS.  ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG08/2330Z

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Full Size Graphic

-Graphic Map Depicting Ash