FVXX22 KWBC 091238
VOLCANIC ASH ADVISORY
ISSUED: 2003JUL09/1300Z      VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2003/247

INFORMATION SOURCE: GOES 9 IMAGERY. GFS MODEL WINDS FORECAST
      
ERUPTION DETAILS: ASH AND GAS EMISSIONS SINCE MAY 10.

OBS ASH DATE/TIME: 09/1202Z.

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS
SFC/FL080 MOVING SW 10-15 KNOTS. 

FCST ASH CLOUD +6H: SEE SIGMETS.

REMARKS: DUE TO THE LOW SUN ANGLE ON THE LAST VISIBLE IMAGES OF
THE DAY...A LONG THIN AREA OF STEAM AND ASH COULD BE SEEN...SEE
MESSAGE 2003/246.  HOWEVER...NIGHT TIME DETECTION OF ASH AT SUCH
A LOW LEVEL IS VERY DIFFICULT AND HENCE CANNOT BE DETECTED AT
THIS TIME.  WILL NOT SPECULATE EXACTLY WHERE THE VERY DIFFUSE
PLUME IS EXCEPT THAT WINDS IN THE AREA OF THE SUMMIT WOULD BE
MOVING THE ASH TO THE SSW AT 10-15 KNOTS.  WILL CONTINUE TO
MONITOR FOR FURTHER DETECTION OF ASH ASSOCIATED WITH THE WEAK
STEAMING AND DEGASSING FROM ANATAHAN....GALLINA 

NEXT ADVISORY: WILL BE ISSUED BY 2003JUL09/1900Z.

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