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 would drift north-northeast in the morning, changing to northeast by afternoon.

Recent observations: The USFS webcam this morning shows only the base of a snowy mountain whose middle and upper slopes are cloaked in clouds. Our instrumental signals indicate no change in patterns of seismicity. Rockfalls persist, judging from the seismic traces. Some of these rockfalls have likely wafted ash up to crater-rim altitude, but visual observations are lacking, hampered by cloudy weather. The GPS receiver on the new dome has slowed its progress, but only incrementally. Lava is still plowing westward at about 0.9 m per day as it is extruded from the vent.