FVXX20 KNES 202227
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG20/2227Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/700

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS

OBS ASH DATE/TIME: 20/2125Z

OBS ASH CLOUD: SFC/FL150 15NM WIDE LINE BETWEEN
N1801E14556 - N1729E14538 - N1620E14540. ASH IS
MOVING N 10-15 KNOTS. 

FCST ASH CLOUD +6H: 21/0330Z SFC/FL150 25NM WIDE
LINE BETWEEN N1852E14637 - N1728E14544 -
N1622E14538. 

FCST ASH CLOUD +12H: 21/0930Z SFC/FL120 25NM WIDE
LINE BETWEEN N1909E14544 - N1619E14540. 

FCST ASH CLOUD +18H: 21/1530Z SFC/FL150 25NM WIDE
LINE BETWEEN N1909E14533 - N1646E14517 -
N1620E14540. 

REMARKS: HIGH LEVEL CIRRUS IS BLOWING OVER THE
CENTRAL MARIANAS ISLANDS FROM TROPICAL STORM 12W
OBSCURRING THE LOW LEVEL ASH NORTH OF GUGUAN
ISLAND AND POINTS NE. PRIOR IMAGES BEFORE THE
CLOUDS MOVED IN HINT AT ASH UP  TO 19N NE OF PAGAN
ISLAND.   ASH WILL START TO BE TRANSPORTED TO THE
WEST NEAR THE VOLCANO BY THE END OF THE FORECAST
PERIOD. ...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG21/0430Z

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