FVXX20 KNES 300240
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL30/0239Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/606

INFORMATION SOURCE: HONOLULU MWO. GFS MODEL WINDS.
RADIOSONDE. PILOT REPORT. GOES-9. 

ERUPTION DETAILS: ONGOING EMISSIONS

OBS ASH DATE/TIME: 30/0202Z

OBS ASH CLOUD: SFC/FL250 5NM WIDE LINE BETWEEN
N1646E14410 - N1619E14539. ASH IS MOVING W 20
KNOTS. SFC/FL400 N1629E14538 - N1628E14544 -
N1621E14546 - N1616E14538 - N1619E14536 -
N1629E14538 MOVING NE 15 KNOTS. 

FCST ASH CLOUD +6H: 30/0800Z SFC/FL250 5NM WIDE
LINE BETWEEN N1655E14410 - N1625E14536. SFC/FL400
NO ASH EXP.

FCST ASH CLOUD +12H: 30/1400Z SFC/FL250 5NM WIDE
LINE BETWEEN N1659E14410 - N1625E14539. 

FCST ASH CLOUD +18H: 30/2000Z SFC/FL250 5NM WIDE
LINE BETWEEN N1722E14417 - N1625E14538. 

REMARKS: THE MWO REPORTED A SEISMIC ALARM AT 0118Z
LASTING 1 MINUTE.  SUBSEQUENT 0130Z PILOT REPORT
REPORTED ASH PLUME TO FL400.   SATELLITE IMAGERY
SHOWS THE MAIN AREA OF ASH MOVING TO THE WEST WITH
SOME THINNER ASH DRIFTING TO THE NORTH OR
NORTHEAST OF THE SUMMIT. PREVIOUS CONTINUOUS PLUME
IS NOW ELEVATED TO FL250 AND IS 5 NMI WIDE
EXTENDING ABOUT 90 NMI TO THE WEST FO THE SUMMIT.
...BALDWIN

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL30/0845Z

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