FVXX20 KNES 120925
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL12/0924Z   VAAC: WASHINGTON

VOLCANO: ANATAHAN 0804-20
LOCATION: N1620E14539   AREA: MARIANA.ISLANDS

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/531

INFORMATION SOURCE: GFS MODEL WINDS. GOES-9. 

ERUPTION DETAILS: ONGOING ASH EMISSIONS	

OBS ASH DATE/TIME: 12/0902Z

OBS ASH CLOUD: SFC/FL200 N1725E14435 - N1652E14531
- N1650E14559 - N1618E14601 - N1612E14539 -
N1609E14452 - N1725E14435 MOVING W 0-5 KNOTS. 

FCST ASH CLOUD +6H: 12/1502Z SFC/FL200 N1703E14440
- N1637E14602 - N1549E14556 - N1557E14438 -
N1703E14440 

FCST ASH CLOUD +12H: 12/2102Z SFC/FL200
N1631E14455 - N1625E14554 - N1522E14607 -
N1523E14442 - N1631E14455 

FCST ASH CLOUD +18H: 13/0302Z SFC/FL200
N1638E14531 - N1629E14549 - N1452E14610 -
N1453E14451 - N1638E14531 

REMARKS: WINDS HAVE BECOME VERY WEAK IN THE AREA
AND ASH HAS BEGUN TO DRIFT IN MULTIPLE DIRECTIONS.
 EVENTUALLY ASH WILL START DRIFTING SOUTH UNDER
MID-LEVEL NORTHERLY WINDS.  ASH WILL CONTINUE TO
BE VERY SLOW MOVING... BUT MAY REACH SAIPAN BY
12-18 HRS.  THUNDERSTORMS EMBEDDED WITHIN THE
PLUME MAY TRANSPORT ASH TO HIGHER ELEVATIONS IN
LOWER/LESS DENSE AMOUNTS.  ...GALLINA

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL12/1530Z

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