Mt. Fitzherbert

Aerial views taken on 2005-Jun-19

Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that any ash clouds that rise above the crater rim today would drift north-northwestward to northward early in the day and north-northeastward later. Thus, Johnston Ridge and parts of Highway 504 could receive ash fall.

Recent observations: Crews are in the field today to survey features and targets on the lava dome from the crater mouth and rim, to continue installation of an array of broad-band seismometers, and to examine the glacier for potential sites for GPS spiders. Several episodes of bright glow were picked up on the USFS VolcanoCam last night and observers reported numerous incandescent rockfalls from the west flank of the lava dome. Highly fractured lava on the west flank of the dome, just south of the smooth whaleback, is susceptible to such rockfalls.