Mt. Fitzherbert

Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that any ash clouds rising above the crater rim today would drift westward.

Recent observations: Slow dome growth continues. On Tuesday, field crews serviced time-lapse cameras and relocated a GPS spider on the lowest part of the west glacier arm, which is advancing and encroaching upon the Yellow Rock seismometer. This shift will provide a clearer sense of how soon the glacier is likely to cover the seismometer. Other crews took water samples from springs and looked for evidence that a small debris flow may have passed down Loowit channel last Friday night.