FVXX20 KNES 260638
VOLCANIC ASH ADVISORY
ISSUED: 2005APR26/0628Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/204

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. USGS.


ERUPTION DETAILS: LOW LEVEL ASH PLUME

OBS ASH DATE/TIME: 26/0525Z

OBS ASH CLOUD: SFC/FL090 N1900E14423 - N1618E14540
- N1618E14541 - N1802E14353 - N1900E14423 MOVING
NW 15-20 KNOTS. 

FCST ASH CLOUD +6H: 26/1130Z SFC/FL090 N1951E14451
- N1841E14514 - N1759E14511 - N1618E14540 -
N1831E14421 - N1831E14421 - N1951E14451 

FCST ASH CLOUD +12H: 26/1730Z SFC/FL090
N2006E14518 - N1847E14526 - N1618E14541 -
N1831E14421 - N2006E14518 

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: USGS REPORTS SUBSTANTIALLY INCREASED
SEISMIC TREMORS.  SATELLITE IMAGERY SHOWS A DENSE
PLUME OF ASH BELOW ABOUT FL090 EXTENDING FROM THE
VOLCANO TOWARD THE NORTHWEST.  THERE IS ALSO A
PERSISTENT BUT NOT ESPECIALLY BRIGHT HOTSPOT AT
THE VOLCANO.   THE PLUME IS FORECAST TO BECOME
WIDER AND SOMEWHAT MORE NORTHERLY IN THE NEXT 6 TO
12 HOURS.   ...

NEXT ADVISORY: WILL BE ISSUED BY 2005APR26/1230Z

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