FVXX20 KNES 171240
VOLCANIC ASH ADVISORY
ISSUED: 2005MAY17/1239Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/292

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
STEAM

OBS ASH DATE/TIME: 17/1202Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL080 MOVING TO NE 15-20 KNOTS.

FCST ASH CLOUD +6H: 17/1800Z SFC/FL080 15NM WIDE
LINE BETWEEN N1718E14731 - N1620E14541. 

FCST ASH CLOUD +12H: 18/0000Z SFC/FL080 20NM WIDE
LINE BETWEEN N1752E14902 - N1619E14540. 

FCST ASH CLOUD +18H: 18/0600Z SFC/FL080 20NM WIDE
LINE BETWEEN N1618E14539 - N1626E14756 -
N1544E14923. 

REMARKS: DUE TO WEATHER CLOUDS NO PLUME CAN BE
DETECTED IN IMAGERY.  AN OCCASIONAL HOTSPOT CAN BE
DETECTED IN BREAKS IN THE CLOUDCOVER WHICH
SUGGESTS ERUPTION CONTINUES.   LOW CONFIDENCE IN
FORECASTED PLUME  WIDTH AND LENGTH DUE TO CURRENT
CLOUDCOVER.   ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005MAY17/1845Z

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