FVXX22 KWBC 311256
VOLCANIC ASH ADVISORY
ISSUED: 2003MAY31/1255Z      VAAC: WASHINGTON

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

ADVISORY NUMBER: 2003/088
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GUAM UPPER AIR SOUNDING. 
  
ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. 
 
OBS ASH DATE/TIME: 31/1202Z
 
OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA.  WINDS
SFC/FL100 MOVING NW 10-15 KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS.

REMARKS: ASH NOT IDENTIFIABLE IN SATELLITE IMAGERY THROUGH
31/1202Z DUE TO OBSCURING CLOUD COVER AND DARKNESS. THERE IS NO
REASON TO BELIEVE THE VOLCANO HAS STOPPED EMITTING ASH SO WE ARE
TAKING THE ESTIMATED ASH HEIGHT BACK DOWN ITS MORE ROUTINE LOWER
LEVEL OF BELOW FL100. THERE HAVE BEEN NO UPDATED PILOT REPORTS.  
WE WILL CONTINUE TO CLOSELY MONITOR ANATAHAN AND UPDATE FOR ANY
CHANGES.  

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY31/1900Z.

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