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 southward at low altitude and eastward at higher altitude early in the day and eastward at all altitudes later.

Recent observations: Initial analysis of recent photographs from cameras on the rim of the crater show that the active northwestern portion of the new lava dome continues to plow westward into the west arm of the glacier. The average size and rate of occurrence of the tiny earthquakes that accompany dome extrusion has increased slightly during the past few days. Similar episodes of slight increases or decreases in seismicity have occurred in the past without noticeable changes in eruptive activity.