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 east-northeastward early in the day and east-southeastward later.

Recent observations: Growth of the lava dome continues to spawn rockfalls, which produce ash plumes that can rise above the rim. A large rockfall at 8:56pm Sunday generated a bright glow of hot rock and a thick ash plume that temporarily affected radio transmissions from instruments in the crater. Seismicity and deformation within the crater have remained largely the same over the past few days.