FVXX22 KNES 100444
VOLCANIC ASH ADVISORY
ISSUED: 2006JUN10/0443Z   VAAC: WASHINGTON

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

SUMMIT ELEVATION: 8363 FT (2549 M)

ADVISORY NUMBER: 2006/005

INFORMATION SOURCE: GOES-10. NAM WINDS. USGS. 

ERUPTION DETAILS: ROCKFALL AT 0405Z 

OBS ASH DATE/TIME: 10/0415Z

OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE
DATA. WINDS SFC/FL120 MOVING TO S 10-15 KNOTS.

FCST ASH CLOUD +6H: 10/1030Z 

FCST ASH CLOUD +12H: 10/1630Z 

FCST ASH CLOUD +18H: 10/2230Z 

REMARKS: THE USGS CASCADES VOLCANO OBSERVATORY
INDICATES A SEISMIC SIGNAL WAS DETECTED AT MT ST
HELENS AT 0405Z AND WAS LIKELY ASSOCIATED WITH A
ROCKFALL. THIS HAS OFTEN RESULTED IN ASH BEING
EJECTED A FEW THOUSAND FEET ABOVE THE RIM OF THE
CRATER. THE GOES-10 0415Z MULTISPECTRAL IMAGE
SHOWS A SINGLE POINT OF LIKELY ASH OVER THE
SUMMIT. IT IS EXPECTED THAT THE ASH WILL QUICKLY
FALL OUT CLOSE TO THE VOLCANO SO THIS WILL BE THE
ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
CONDITIONS WARRANT. ...RUMINSKI

NEXT ADVISORY: NO FURTHER ADVISORIES

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