FVXX21 KNES 240006
VOLCANIC ASH ADVISORY
ISSUED: 2005FEB24/0005Z   VAAC: WASHINGTON

VOLCANO: ST. HELENS 1201-05
LOCATION: N4612W12211   AREA: US-WASHINGTON

SUMMIT ELEVATION: 8363 FT (2549 M)

ADVISORY NUMBER: 2005/001

INFORMATION SOURCE: GFS MODEL WINDS. GOES-10.
USGS. 

ERUPTION DETAILS: ROCKFALL AROUND 23/2335Z.

OBS ASH DATE/TIME: 23/2345Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL100 MOVING TO N 5-10 KNOTS.

FCST ASH CLOUD +6H: NOT AVBL

FCST ASH CLOUD +12H: NOT AVBL

FCST ASH CLOUD +18H: NOT AVBL

REMARKS: A ROCKFALL WITHIN THE CRATER HAS PRODUCED
A PLUME OF ASH THAT ROSE AROUND 1000 FT ABOVE THE
CRATER OR BELOW FL100.  THE PLUME IS DISSIPATING
RAPIDLY AS IT DRIFTS NORTH.  DUE TO ITS SMALL SIZE
IT MOST LIKELY WILL NOT BE SEEN IN IMAGERY.   ...

NEXT ADVISORY: NO FURTHER ADVISORIES

NNNN