FVXX20 KNES 200631
VOLCANIC ASH ADVISORY
ISSUED: 2005JUN20/0631Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/434

INFORMATION SOURCE: GFS MODEL WINDS. RADIOSONDE.
GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
GASES 

OBS ASH DATE/TIME: 20/0525Z

OBS ASH CLOUD: SFC/FL100 40NM WIDE LINE BETWEEN
N1626E13926 - N1645E14351 - N1620E14541. ASH IS
MOVING W 15-20 KNOTS. 

FCST ASH CLOUD +6H: 20/1130Z SFC/FL100 40NM WIDE
LINE BETWEEN N1742E14038 - N1619E14543. 

FCST ASH CLOUD +12H: 20/1730Z SFC/FL100 40NM WIDE
LINE BETWEEN N1701E14028 - N1618E14542. 

FCST ASH CLOUD +18H: 20/2330Z SFC/FL100 40NM WIDE
LINE BETWEEN N1702E14029 - N1617E14543. 

REMARKS: THE PLUME DIRECTION HAS BECOME A LITTLE
MORE NORTHWESTERLY IN THE PAST FEW HOURS HOWEVER
IS FORECAST TO BECOME WESTERLY AGAIN.  IN VISIBLE
IMAGERY THE PLUME IS ROUGHLY 40 NM WIDE OUT AT ITS
END AROUND 345 MILES WEST OF THE ISLAND BUT IS
ONLY AROUND 10 NM WIDE WITHIN THE FIRST 60 NM.  
...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005JUN20/1230Z

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Full Size Graphic

-Graphic Map Depicting Ash