FVXX20 KNES 100237
VOLCANIC ASH ADVISORY
ISSUED: 2005JUL10/0236Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 2585 FT (788 M)

ADVISORY NUMBER: 2005/521

INFORMATION SOURCE: GUAM WFO. GFS MODEL WINDS.
RADIOSONDE. GOES-9. USGS. 

ERUPTION DETAILS: BRIEF ERUPTION TO ESTIMATED
FL320 WITH CONTINUED EMISSION AROUND FL200

OBS ASH DATE/TIME: 10/0202Z

OBS ASH CLOUD: SFC/FL150 30NM WIDE LINE BETWEEN
N1608E14522 - N1407E14201. ASH IS MOVING SW 15
KNOTS. SFC/FL320 40NM WIDE LINE BETWEEN
N1625E14540 - N1540E14543. ASH IS MOVING S 10
KNOTS. 

FCST ASH CLOUD +6H: 10/0800Z SFC/FL200 50NM WIDE
LINE BETWEEN N1623E14541 - N1238E13909. SFC/FL320
NO ASH EXP.

FCST ASH CLOUD +12H: 10/1400Z SFC/FL200 50NM WIDE
LINE BETWEEN N1622E14541 - N1257E13951. 

FCST ASH CLOUD +18H: 10/2000Z SFC/FL200 50NM WIDE
LINE BETWEEN N1617E14543 - N1450E14028. 

REMARKS: IN IMAGERY AROUND 09/2300Z THERE WAS A
CLOUD THAT ROSE BRIEFLY AND MOVED SOUTH FROM THE
ISLAND AND NOW HAS ALMOST DISSIPATED.  IT HAS NOW
BEEN IDENTIFIED AS A VERY BRIEF ERUPTION TO
ESTIMATED AROUND FL320.  THE VOLCANO THEN RETURNED
TO ITS REGULAR EMISSION BUT HEIGHT RAISED TO FL200
...

NEXT ADVISORY: WILL BE ISSUED BY 2005JUL10/0830Z

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