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 broadly northeast at both low and high altitudes early in the day. Later in the day low level-ash clouds would drift northeast, high level ash clouds to the east.

Recent observations: The volcano is obscured by clouds today. Recent photographs from remote cameras shows that a slab of rock about 70 meters (230 feet) long fell from the north margin of the growing lava fin or spine sometime during the past weekend, probably coincident with a large seismic signal recorded at 9:14 pm PDT Sunday night. The resulting rock-avalanche deposit extends a couple of hundred meters (couple of hundred yards) to the northeast into a depression formed between the new and old lava domes and the east arm of the glacier; an ash cloud accompanying the avalanche left deposits over a broader area . Photographs will be available on our web site later today. Additional smaller rockfalls and avalanches continue.

Update: 11:48

Added photo link