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 northward. Under these conditions, Johnston Ridge and the east end of Highway 504 could receive ash fall.

Recent observations: Yesterday's good weather allowed a variety of field activities to occur. Crews conducted thermal-imaging and visual observations, obtained new photographs, and continued installing broad-band seismometers as part of an array that will operate through the summer to provide information about the character of the volcano's deep magmatic system. Observations reveal that the lava spine continues to grow and that temperatures in cracks near the base of the spine are near 700 degrees C (1300 degrees F).