Mt. Fitzherbert
USGS Update 2005-Apr-23 10:00
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 north-northwestward.
Recent observations: The volcano remains relatively quiet today. Small (~M1) earthquakes are occurring about every three to four minutes, and GPS receivers in the crater continue their slow rates of displacement. Analysis of aerial photographs indicates that as of March 10 the topographic changes in the crater resulting from growth of the new dome and consequent glacier deformation have a combined volume of about 62 million cubic yards. The current eruption has thus far caused a total topographic change in the crater that is equivalent to about two-thirds the volume of the old lava dome.