Mt. Fitzherbert

Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that ash clouds that rise above the crater rim today would drift northeastward early and then switch to an eastward drift later in the day.

Recent observations: The mountain is clear today and emitting a moderate steam plume. Seismicity and deformation of the south part of the lava dome are proceeding at rates similar to those in the recent past. Digital analysis of recent aerial photography suggests that the overall rate of dome growth may have slowed down since late November. Later this week, field crews plan to install more GPS units near the vent area to measure extrusion rate.