FVXX21 KWBC 181243
VOLCANIC ASH ADVISORY
ISSUED: 2004JUL18/1243Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2004/025

INFORMATION SOURCE: GFS MODEL WINDS FORECAST.
GOES-9 IMAGERY. 

ERUPTION DETAILS: OCCASIONAL VENTING OF GASES AND
ASH

OBS ASH DATE/TIME: 18/1202Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL050 MOVING TO W 10 KNOTS.

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: ASH IS ESTIMATED TO FL050. IT IS
DIFFICULT TO DETECT LOW LEVEL ASH IN INFRARED
IMAGERY. ...KARST

NEXT ADVISORY: WILL BE ISSUED BY 2004JUL18/1845Z

NNNN