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 at low altitudes and north-northeastward at higher altitudes. Later in the day, any ash clouds rising above the crater rim would drift southward at low altitudes and north-northeastward at higher altitudes.

Recent observations: The crater and growing lava dome are clear this morning under high clouds. Rockfalls from the growing lava dome continue to produce small amounts of ash and dust. A magnitude 2.9 earthquake last night shortly after 10 p.m. PDT was accompanied by a bright flash on the U.S. Forest Service's VolcanoCam that was likely caused by a rock fall. No significant changes in seismicity or ground deformation have been detected overnight. Yesterday crews surveyed stream channels on the Pumice Plain, placed two GPS spiders on the west arm of the glacier, and conducted a gas-sensing flight.