FVXX20 KNES 201641
VOLCANIC ASH ADVISORY
ISSUED: 2005MAY20/1640Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/304

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

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS

OBS ASH DATE/TIME: 20/1525Z

OBS ASH CLOUD: SFC/FL080 N1806E14510 - N1635E14551
- N1610E14532 - N1746E14440 - N1806E14510 MOVING
NW 5-10 KNOTS. 

FCST ASH CLOUD +6H: 20/2130Z SFC/FL080 30NM WIDE
LINE BETWEEN N1746E14429 - N1625E14537. 

FCST ASH CLOUD +12H: 21/0330Z SFC/FL080 30NM WIDE
LINE BETWEEN N1722E14405 - N1625E14536. 

FCST ASH CLOUD +18H: 21/0930Z SFC/FL080 30NM WIDE
LINE BETWEEN N1706E14407 - N1621E14536. 

REMARKS: IT HAS BECOME INCREASINGLY DIFFICULT TO
DISCERN THE ASH PLUME IN MULTISPECTRAL IMAGERY AS
HIGH LEVEL CLOUDS HAVE MOVED OVER THE ISLAND.  ASH
WAS NO LONGER DETECTED TO THE SOUTH AND EAST OF
THE SUMMIT AT 1525Z.  THE HEIGHT OF THE ASH PLUME
HAS BEEN LOWERED BASED ON MODEL AND UPPER AIR
DATA. ...TURK

NEXT ADVISORY: WILL BE ISSUED BY 2005MAY20/2245Z

NNNN
Full Size Graphic



-Graphic Map Depicting Ash