Mt. Fitzherbert

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 westward to northwestward early in the day, but shift to northward to north-northeastward trajectories as the day progresses. Thus, Johnston Ridge and parts of Highway 504 could receive ash fall.

Recent observations: A clear day today should offer good views of the new dome and perhaps a vapor plume if conditions are right. There has been no change in the level of activity from that of the past few weeks. Weather permitting, crews will try to get out later this week to continue observations, to conduct surveys of targets on the dome to monitor movement, and perhaps to place new GPS instrumentation units.