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 northeastward.

Recent observations: The lava spine continues to grow, accompanied periodically by rockfalls, which may generate small ash clouds that rise above the crater rim. The rockfalls expose hotter interior portions of the lava dome, which in nighttime images appear as a bright spot or flash. Several bright spots are seen in last night’s images, especially around 4:20 am PDT at the time of a vigorous rockfall signal. Seismicity remains at levels typical of the past few days.