FVXX20 KWBC 251921
VOLCANIC ASH ADVISORY
ISSUED: 2005APR25/1921Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/202

INFORMATION SOURCE: GFS MODEL WINDS FORECAST.
UPPER AIR SOUNDING. GOES-9

ERUPTION DETAILS: CONTINUOUS LOW LEVEL PLUME OF
STEAM AND ASH

OBS ASH DATE/TIME: 25/1802Z

OBS ASH CLOUD: 25/1802Z SFC/FL100 N1725E14452 -
N1705E14540 - N1620E14538 - N1641E14458 -
N1725E14452 MOVING N 15-20 KNOTS. 

FCST ASH CLOUD +6H: 26/0002Z SFC/FL100 N1801E14501
- N1718E14547 - N1619E14540 - N1710E14448 -
N1801E14501 

FCST ASH CLOUD +12H: 26/0602Z SFC/FL100
N1850E14500 - N1822E14553 - N1617E14540 -
N1726E14432 - N1850E14500 

FCST ASH CLOUD +18H: 26/1202Z SFC/FL100
N1859E14447 - N1835E14554 - N1617E14540 -
N1728E14430 - N1859E14447 

REMARKS: ASH CAN STILL BE SEEN IN MULTISPECTRAL
IMAGERY.  THE PLUME IS FAN SHAPED AND BECOMING
MORE NORTHERLY OFF THE ISLAND.  THE FURTHEST
EXTENT IS ROUGHLY 75 MILES TO THE NORTHWEST. 
...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005APR26/0045Z

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