FVXX22 KWBC 121258
VOLCANIC ASH ADVISORY
ISSUED: 2003JUN12/1300Z      VAAC: WASHINGTON

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

ADVISORY NUMBER: 2003/138
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST.
UPPER AIR SOUNDING  
  
ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. 
 
OBS ASH DATE/TIME: 12/1202Z
 
OBS ASH CLOUD: SFC/FL080 N1621E14540 N1713E14433 N1756E14431
N1805E14347 N1907E14305 N1912E14212 N1758E14214 N1645E14415
N1621E14540 MOVING NW 10-15 KNOTS.

SFC/FL080 N1940E13941 N1912E13645 N1800E13426 N1727E13425
N1710E13457 N1831E13835 N1940E13941 MOVING W 10-15 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS.

REMARKS: SATELLITE IMAGERY THROUGH 12/1202Z CONTINUES TO SHOW TWO
AREAS OF ASH.  AREA NUMBER ONE EXTENDS FROM THE SUMMIT NORTHWEST
APPROXIMATELY 260 NM.  AREA NUMBER TWO IS DETACHED FROM THE FIRST
AREA AND IS FOUND MAINLY BETWEEN 135E AND 140E AT ROUGHLY 18N.
HEIGHT OF THE ASH WAS READJUSTED BASED ON CURRENT SOUNDING AND
GFS MODEL WIND DATA....WALTER

NEXT ADVISORY: WILL BE ISSUED BY 2003JUN12/1900Z.

NNNN"Attached Graphic Map Depicting Ash Only" 

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