FVXX22 KWBC 212059
VOLCANIC ASH ADVISORY             
ISSUED: 2003MAY21/2100Z      VAAC: WASHINGTON
 
VOLCANO: ANATAHAN 0804-20
LOCATION: N1621E14540    AREA: MARIANA ISLANDS
 
SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/048
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST 

ERUPTION DETAILS: ONGOING ASH EMISSIONS...FIRST ERUPTION BEGAN
MAY 10
 
OBS ASH DATE/TIME: 21/2002Z
 
OBS ASH CLOUD: SFC/FL070 10 NM WIDE LINE OF ASH EXTENDING BETWEEN
N1621E14540 N1600E14528 MOVING SOUTHWEST 10 TO 15 KNOTS. 
SFC/FL070 N1600E14528 N1545E14446 N1526W14303 N1615E14128
N1606E14050 N1454E14217 N1353E14320 N1338E14402 N1439E14137
N1536E14528 N1600E14528 MOVING SOUTHWEST 10 TO 15 KNOTS.

.

FCST ASH CLOUD +6H: SEE SIGMETS. 

REMARKS: SATELLITE IMAGERY THROUGH 2002 SHOWS A PLUME OF RELATIVE
THICK ASH STILL BEING EMITTED FROM THE VOLCANO.  A LARGER AREA OF
THINNER ASH PREVIOUSLY EMITTED CAN STILL BE SEEN BUT BOUNDARIES
ARE VERY APPROXIMATE. ESTIMATED HEIGHT IS LOWERED BASED ON LATEST
FORECAST SOUNDING DATA.

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY22/0300Z.

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"Attached Graphic Map Depicting Ash Only" 

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