FVXX20 KNES 031234
VOLCANIC ASH ADVISORY
ISSUED: 2005AUG03/1234Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/625

INFORMATION SOURCE: GUAM WFO. GFS MODEL WINDS.
GOES-9. USGS. 

ERUPTION DETAILS: CONTINUOUS ASH EMISSIONS WITH A
POSSIBLE LARGER EMISSION STARTING ABOUT 09Z

OBS ASH DATE/TIME: 03/1202Z

OBS ASH CLOUD: SFC/FL420 N1618E14540 - N1520E14617
- N1451E14615 - N1517E14555 - N1618E14540 MOVING
SE 40 KNOTS. SFC/FL180 N1641E14617 - N1544E14605 -
N1618E14543 - N1639E14552 - N1641E14617 MOVING E
15 KNOTS. SFC/FL120 35NM WIDE LINE BETWEEN
N1619E14540 - N1306E14429. ASH IS MOVING S 5-10
KNOTS. 

FCST ASH CLOUD +6H: 03/1800Z 

FCST ASH CLOUD +12H: 04/0000Z 

FCST ASH CLOUD +18H: 04/0600Z 

REMARKS: BEGINNING JUST PRIOR TO 09Z THERE WAS 
INCREASED SEISMICITY AND A POSSIBLE ASH CLOUD
APPEARED  EAST OF THE VOLCANO.  THIS POSSIBLE ASH
CLOUD IS MOVING TOWARD THE NORTHEAST EAST AND
SOUTHEAST.  THE POSSIBLE ASH MOVING TOWARD THE
EAST AND NORTHEAST IS BELOW FL180 WHILE THAT
MOVING TO THE SOUTHEAST IS UP TO FL420.  THE USUAL
ONGOING ASH EMISSIONS BELOW ABOUT FL120 IS SENDING
AN ASH PLUME TOWARD THE SOUTHWEST.  A FORECAST
WILL BE ISSUED AS SOON AS POSSIBLE. ...

NEXT ADVISORY: WILL BE ISSUED BY 2005AUG03/1830Z

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