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 south-southeastward early in the day. Later in the day, low-level clouds would drift south-southwestward but higher-level clouds would drift south-southeastward.

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: The volcano is clear this morning and emitting little steam. Revised analyses of Thursday's gas measurements indicate that gas emissions are very low and essentially unchanged from those measured in late February. Hence there is no evidence at this time to indicate that a batch of more gas-rich magma has worked its way near the surface. Seismicity remains at a level comparable to that of the days before Tuesday's explosive event. Next week, crews plan to deploy new seismometers and GPS units to replace those lost to the explosion.