FVXX24 KNES 021423 VOLCANIC ASH ADVISORY ISSUED: 2005JUL02/1423Z VAAC: WASHINGTON VOLCANO: ST. HELENS 1201-05 LOCATION: N4612W12211 AREA: US-WASHINGTON SUMMIT ELEVATION: 8363 FT (2549 M) ADVISORY NUMBER: 2005/11 INFORMATION SOURCE: GOES-12. GFS MODEL WINDS. RADIOSONDE. PILOT REPORT. USGS. ERUPTION DETAILS: SEISMIC EVENT WITH REPORTED ASH OVER SUMMIT OBS ASH DATE/TIME: 02/1400Z OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA. WINDS SFC/FL090 MOVING TO SE 20 KNOTS. FCST ASH CLOUD +6H: NOT AVBL FCST ASH CLOUD +12H: NOT AVBL FCST ASH CLOUD +18H: NOT AVBL REMARKS: THERE WAS A PILOT REPORT AT 02/1340Z OF ASH OVER THE SUMMIT AT FL090 MOVING SE. THE USGS REPORTS A SEISMIC EVENT OCCURED JUST BEFORE THE OBSERVATION OF ASH. THIS EVENT PRODUCED SOME ROCKFALLS THAT KICKED ASH INTO AIR. USGS REPORTS NO FURTHER SEISMIC ACTIVITY. MOST OF THE ASH WILL FALL IN AND AROUND THE SUMMIT. ASH IS NOT OBSERVED IN THE SATELLITE IMAGERY THROUGH 02/1400Z. THIS WILL BE THE ONLY MESSAGE ON THIS EVENT. WALTER ... NEXT ADVISORY: NO FURTHER ADVISORIES NNNN