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 to eastward at low altitudes, but strongly southeastward at higher altitudes.

Potential ash hazards to aviation: Under current eruptive conditions, small, short-lived explosions may produce ash clouds that exceed 30,000 feet in altitude. Ash from such events can travel 100 miles or more downwind.

Recent observations: Clouds continue to partly obscure the volcano this morning. These clouds may hinder slinging new instruments to the crater today. Forecasts are for heavy rains and high freezing levels this weekend. Hence, rapid melting of recently deposited snow and subsequent erosion of recently deposited ash could generate small mudflows from the crater over the next few days.