Mt. Fitzherbert

Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that any ash clouds rising above the crater rim today would drift northeastward.

Recent observations: Two more moderate sized earthquakes (magnitudes 2.9 and 2.7) occurred yesterday afternoon in conjunction with a brief swarm of much smaller earthquakes. This swarm of quakes was broadly associated with a period of minor ground inflation then deflation near the dome. Similar correlations between earthquakes and ground deformation have been common during this eruption. Yesterday’s brief swarm of quakes, combined with similar swarms that occurred on Saturday and in the prior week, show that the dome is still active and that the eruption continues. Field crews hope to take advantage of good weather this week to make observations and conduct instrument maintenance.