FVXX22 KWBC 111249 
VOLCANIC ASH ADVISORY
ISSUED: 2003JUN11/1300Z      VAAC: WASHINGTON

VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/134
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST.
GUAM UPPER AIR SOUNDING. 
  
ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. 
 
OBS ASH DATE/TIME: 11/0925Z
 
OBS ASH CLOUD:  SFC/FL120 50 NM WIDE LINE OF ASH EXTENDING
BETWEEN N1621E14540 N1720E14422 N1712E14302 N1627E14120
N1528E14023 MOVING NW 15-20 KNOTS. 

FCST ASH CLOUD +6H: SEE SIGMETS.

REMARKS: SATELLITE IMAGERY AT 11/0925Z SHOWS ASH TO AN ESTIMATED 
FL120 EXTENDING NORTHWEST FROM THE SUMMIT. THE GFS MODEL WINDS
FORECAST AND THE GUAM UPPER AIR SOUNDING INDICATES WINDS TO BE
15-20 KNOTS TO FL120.  ASH BECOMES THINNER AND DIFFUSE FARTHER
FROM THE SUMMIT NEAR 143E....KARST/KIBLER

NEXT ADVISORY: WILL BE ISSUED BY 2003JUN11/1900Z.

NNNN"Attached Graphic Map Depicting Ash Only" 

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