FVXX20 KNES 050654
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL05/0654Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/499

INFORMATION SOURCE: GFS MODEL WINDS. PILOT REPORT.
GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
GASES

OBS ASH DATE/TIME: 05/0602Z

OBS ASH CLOUD: SFC/FL250 30NM WIDE LINE BETWEEN
N1617E14541 - N1633E14302 - N1554E13756. ASH IS
MOVING W 10-15 KNOTS. 

FCST ASH CLOUD +6H: 05/1200Z SFC/FL250 30NM WIDE
LINE BETWEEN N1616E14538 - N1537E14046 -
N1552E13754. 

FCST ASH CLOUD +12H: 05/1800Z SFC/FL250 30NM WIDE
LINE BETWEEN N1616E14540 - N1546E13928 -
N1546E13752. 

FCST ASH CLOUD +18H: 

REMARKS: A PILOT HAS REPORTED AN ASH CLOUD OVER
THE VOLCANO UP TO FL250 AND DRIFTING TO THE WEST. 
 THE ASH THAT IS WITHIN 125 NM OF THE VOLCANO IS
SUBSTANTIALLY DENSER AND PROBABLY HIGHER THAN THE
ASH FARTHER DOWNSTREAM.   LITTLE CHANGE IN WIND
DIRECTION IS EXPECTED IN THE NEXT 12 HOURS SO
LITTLE CHANGE IN PLUME DIRECTION IS FORECAST.  
...

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL05/1300Z

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