FVXX20 KNES 171841
VOLCANIC ASH ADVISORY
ISSUED: 2005MAY17/1841Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/293

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
STEAM

OBS ASH DATE/TIME: 17/1802Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL090 MOVING TO NE 15-20 KNOTS.

FCST ASH CLOUD +6H: 18/0000Z SFC/FL090 20NM WIDE
LINE BETWEEN N1644E14814 - N1620E14540. 

FCST ASH CLOUD +12H: 18/0600Z SFC/FL090 20NM WIDE
LINE BETWEEN N1620E14540 - N1614E14702 -
N1534E14831. 

FCST ASH CLOUD +18H: 18/1200Z SFC/FL090 20NM WIDE
LINE BETWEEN N1619E14541 - N1533E14655 -
N1407E14802. 

REMARKS: THICK CLOUDS NOW OBSCURE THE VOLCANO. 
THE HOTSPOT IS NO LONGER DETECTABLE AND NO PLUME
CAN BEEN SEEN.  LOW CONFIDENCE ON FORECAST WIDTH
OR LENGTH OF PLUME DUE TO CURRENT CLOUDCOVER. 
PLUME WILL BEND MORE SOUTHEAST WITH TIME. 
...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005MAY18/0045Z

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