FVXX20 KNES 092200
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL09/2159Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/520

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

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
GASES

OBS ASH DATE/TIME: 09/2102Z

OBS ASH CLOUD: SFC/FL200 60NM WIDE LINE BETWEEN
N1458E14422 - N1449E14212. ASH IS MOVING SW 10
KNOTS. SFC/FL120 25NM WIDE LINE BETWEEN
N1619E14544 - N1457E14406. ASH IS MOVING SW 15
KNOTS. 

FCST ASH CLOUD +6H: 10/0300Z SFC/FL150 50NM WIDE
LINE BETWEEN N1619E14546 - N1340E14113.  SFC/FL200
NO ASH EXP.

FCST ASH CLOUD +12H: 10/0900Z SFC/FL150 50NM WIDE
LINE BETWEEN N1618E14546 - N1547E14323 -
N1346E14038 - N1204E13906. 

FCST ASH CLOUD +18H: 10/1500Z SFC/FL150 40NM WIDE
LINE BETWEEN N1613E14549 - N1532E14248 -
N1427E14045. 

REMARKS: A PILOT REPORT HAS A FAINT PORTION OF THE
ASH CLOUD TO FL200 HOWEVER THE CURRENT EMISSION
FROM THE VOLCANO APPEARS TO STILL BE LOWER AROUND
FL120 AND MOVING SOUTHWEST.  THE FAINT AREA WILL
LIKELY DISSIPATE OVER THE NEXT 6 HOURS AND AS THE
DAY GOES ON THE EMISSION WILL RISE TO MAYBE AROUND
FL150. THE OVERALL FORECAST STILL SHOWS A MOSTLY
SOUTHWEST TO WEST SOUTHWEST TREND.  ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL10/0400Z

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