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 northeastwardly.

Recent observations: Small earthquakes accompanying lava dome extrusion continue to occur every 1-2 minutes, punctuated by occasional rockfall signals on seismic records. With clear weather forecasted it is possible that ash clouds from large rockfalls will on occasion be visible. Today, field crews are acquiring thermal and photographic images of the new lava dome, surveying stream channels around Loowit Falls, and retrieving surveying gear from several campaign GPS stations. Yesterday, a new tiltmeter station was installed on the north side of the old lava dome and a new continuous GPS station was installed north of Mount St. Helens.