FVXX22 KNES 291727
VOLCANIC ASH ADVISORY
ISSUED: 2006MAY29/1727Z   VAAC: WASHINGTON

VOLCANO: ST. HELENS 1201-05
LOCATION: N4611 W12210   AREA: US-WASHINGTON

SUMMIT ELEVATION: 8363 FT (2549 M)

ADVISORY NUMBER: 2006/003

INFORMATION SOURCE: GOES-12. GFS WINDS. PILOT
REPORT. CASCADES VOLCANO OBSERVATORY. 

ERUPTION DETAILS: ROCKFALL AT ABOUT 1610Z PRODUCED
ONE TIME ASH PUFF

OBS ASH DATE/TIME: 29/1700Z

OBS ASH CLOUD: SFC/FL220 4NM WIDE LINE BETWEEN
N4614 W12210 - N4617 W12209. ASH IS MOVING N 2-10
KNOTS. 

FCST ASH CLOUD +6H: 29/2300Z NO VA EXP.

FCST ASH CLOUD +12H: 30/0500Z NO VA EXP.

FCST ASH CLOUD +18H: 30/1100Z NO VA EXP.

REMARKS: THE CASCADES VOLCANO OBSERVATORY REPORTED
A ROCKFALL ACCOMPANIED BY ABOUT 2 MINUTES OF
ACTIVITY THAT PRODUCED ASH.  ASH IS SLOWLY
DRIFTING TO THE NORTH AND ALREADY STARTING TO
DISSIPATE.  GROUND OBSERVERS AND SOME PILOT
REPORTS SUGGEST ASH IS AT OR BELOW FL200 BUT A FEW
PILOT REPORTS SUGGEST ASH TO FL240. ...

NEXT ADVISORY: WILL BE ISSUED BY 2006MAY29/2330Z

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Full Size Graphic

-Graphic Map Depicting Ash