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 northeasterly.

Recent observations: Early morning pictures from the Sugarbowl camera indicate that dome growth continues, with continued slumping of the middle part of the new dome complex and primarily westwards motion of the latest lava spine located at the western edge of the complex. Over the last week seismicity levels have gradually dropped from an earthquake every 5-10 minutes to one every 10-20 minutes. No significant changes in seismicity or deformation have occurred over the last 24 hours. A portion of the spine fell this morning generating a rock fall signal at 0818 PDT. On Monday, weather permitting, field crews will retrieve the temporary seismic instruments that were installed late last week, service GPS instruments, replace a camera on the east crater rim, and do geologic mapping on the upper flanks.