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 northeastward.

Recent observations: Seismicity and repeat photos from remote cameras confirm that extrusion of the lava spine formerly known as “the fin” is continuing. A large rockfall and avalanche from the spine on May 29 damaged tiltmeter, seismometer, and GPS stations on the northeast flank of the 1980-1986 lava dome. They will be repaired or replaced as soon as weather permits, but probably not before early next week. Additional rockfalls from the growing spine are likely in the coming days. Such events could generate dust plumes that rise above the crater rim. Any resulting deposit would likely be very thin and confined mostly to the crater and outer flanks of the volcano.