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 north-northeastward early in the day and eastward to east-southeastward later.

Recent observations: Brief glimpses of the new lava dome from the Sugar Bowl DomeCam early this morning show a vapor plume rising above the growing lava dome. Overnight rain has settled the dust that was blowing around the crater yesterday and has created atmospheric conditions favorable for a visible vapor plume. Numerous rockfalls occurred overnight as revealed by flashes of light on the VolcanoCam. Analysis of a digital elevation model created from aerial photographs taken on June 15 shows that the volume of the new lava dome was about 54 million cubic meters (70 million cubic yards), or about 60% of the volume of the lava dome that grew in the crater from 1980 to 1986. The rate of addition of lava to the dome from mid-May to mid-June remained at about 1.5 cubic meters (2 cubic yards) per second. The high point of the lava dome (the actively growing spine) on June 15 was 2335 meters (7660 feet), but it is currently lower than that owing to the recent large rockfalls from the spine.