USGS Update 2004-Dec-22 09:25
Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that ash clouds that rise above the crater rim today would drift south-southeastward early and transition to a more southward drift later.
Recent observations: Though valleys are clouded, the mountain is partly clear today and sports a strong steam plume. Clear weather is forecast for the next few days. Tomorrow, field crews plan to service seismic stations, continue repairs to radio transmitters, and install GPS units. Further analysis of last week's gas measurements shows that SO2, CO2, and H2S are well within the range of previous measurements; there has been no significant change in emissions. Analyses of recent aerial photographs and lidar surveys are underway and updated estimates of dome volume will be forthcoming.
Mt. Fitzherbert