FVXX20 KNES 211029
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG21/1028Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/702

INFORMATION SOURCE: GUAM WFO. HONOLULU MWO. GFS
MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS

OBS ASH DATE/TIME: 21/0925Z

OBS ASH CLOUD: SFC/FL100 15NM WIDE LINE BETWEEN
N1720E14510 - N1622E14540. ASH IS MOVING NW 5-10
KNOTS. 

FCST ASH CLOUD +6H: 21/1530Z SFC/FL100 20NM WIDE
LINE BETWEEN N1715E14431 - N1620E14540. 

FCST ASH CLOUD +12H: 21/2130Z SFC/FL100 25NM WIDE
LINE BETWEEN N1658E14400 - N1622E14540. 

FCST ASH CLOUD +18H: 22/0330Z 

REMARKS: THE CIRRUS CLOUDS HAVE THICKENED MAKING
ASH DETECTION DIFFICULT.  A SMALL PLUME EXTTENDS
TO ABOUT 40 MILES NORTHWEST OF THE VOLCANO  WHERE
IT BECOMES OBSCURED BY CLOUDS.
 ...

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG21/1630Z

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