FVXX22 KWBC 310100
VOLCANIC ASH ADVISORY
ISSUED: 2003MAY31/0100Z      VAAC: WASHINGTON

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

ADVISORY NUMBER: 2003/086
 
INFORMATION SOURCE:  GOES-9 IMAGERY. GFS MODEL WINDS FORECAST. 
PILOT REPORT
  
ERUPTION DETAILS: CONTINUOUS ASH AND GAS EMISSIONS SINCE MAY 10. 
 
OBS ASH DATE/TIME: 31/0025Z
 
OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA.  WINDS
SFC/FL080 MOVING N 5-10 KNOTS.  FL080/FL120 E 5 KNOTS. FL120/200
SE 15-20 KNOTS. FL200/250 S 15-25 KNOTS

FCST ASH CLOUD +6H: SEE SIGMETS

REMARKS: SATELLITE IMAGERY THROUGH 31/0025Z SHOWS MULTILAYERED
CLOUDS OBSCURING THE VOLCANO.  A PILOT REPORT WAS RECEIVED
INDICATING THAT ASH WAS NOW UP TO FL250 DUE TO A FAIRLY VIGOROUS
ERUPTION.  FL200 WINDS WERE REPORTED TO BE S AT 15 KNOTS AND
FL250 WINDS WERE REPORTED TO BE S AT 25 KNOTS.

NEXT ADVISORY: WILL BE ISSUED BY 2003MAY31/0700Z.

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