FVXX20 KNES 211241
VOLCANIC ASH ADVISORY
ISSUED: 2005APR21/1241Z VAAC: WASHINGTON
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540 AREA: MARIANA.ISLANDS
SUMMIT ELEVATION: 2585 FT (788 M)
ADVISORY NUMBER: 2005/185
INFORMATION SOURCE: GOES-12. GFS MODEL WINDS.
RADIOSONDE.
ERUPTION DETAILS: CONTINOUS ASH AND STEAM
EMISSIONS
OBS ASH DATE/TIME: 21/1202Z
OBS ASH CLOUD: SFC/FL100 15NM WIDE LINE BETWEEN
N1635E14445 - N1621E14538. ASH IS MOVING W 15-20
KNOTS.
FCST ASH CLOUD +6H: SFC/FL 15NM WIDE LINE BETWEEN
N1657E14425 - N1621E14538.
FCST ASH CLOUD +12H: SFC/FL100 15NM WIDE LINE
BETWEEN N1711E14426 - N1622E14538.
FCST ASH CLOUD +18H: SFC/FL100 15NM WIDE LINE
BETWEEN N1711E14425 - N1622E14538.
REMARKS: MULTIPECTRAL IMAGERY INDICATES A DENSER
PLUME BEGAN EMITTING FROM THE VOLCANO AROUND
21/1100Z. ...SCHWARTZ
NEXT ADVISORY: WILL BE ISSUED BY 2005APR21/1845Z
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