FVXX20 KNES 032141
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL03/2140Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/492

INFORMATION SOURCE: GFS MODEL WINDS. PILOT REPORT.
GOES-9. 

ERUPTION DETAILS: CONTINUOUS EMISSION OF ASH AND
GASES

OBS ASH DATE/TIME: 03/2102Z

OBS ASH CLOUD: SFC/FL200 N1740E14240 - N1618E14543
- N1543E14514 - N1423E14247 - N1642E14101 -
N1740E14240 MOVING W 15-20 KNOTS. 

FCST ASH CLOUD +6H: 04/0300Z SFC/FL200 N1759E14000
- N1757E14223 - N1420E14250 - N1412E13944 -
N1759E14000 SFC/FL150 40NM WIDE LINE BETWEEN
N1621E14235 - N1616E14540. 

FCST ASH CLOUD +12H: 04/0900Z SFC/FL150 40NM WIDE
LINE BETWEEN N1617E14542 - N1548E14137. 

FCST ASH CLOUD +18H: 04/1500Z SFC/FL150 40NM WIDE
LINE BETWEEN N1619E14542 - N1558E14220. 

REMARKS: THERE HAVE BEEN A COUPLE PILOT REPORTS OF
ASH FROM FL200 TO 300 TO THE EAST OF GUAM HOWEVER
THERE IS NOTHING SEEN IN IMAGERY AT THIS TIME. 
THERE IS SOME SCATTERED CONVECTION AND CIRRUS
CLOUDS IN THAT REGION.  IN IMAGERY ONLY A PLUME OF
ASH CAN BE SEEN MOVING WEST FROM THE VOLCANO. 
MAYBE AS VISIBLE IMAGERY BECOMES AVAILABLE THE
FULL EXTENT OF ASH WILL BE SEEN.  ...SWANSON

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL04/0345Z

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