Update, November 24, 2018, 7:26 a.m., Pacific: Per the volcanologists, who kindly replied by email, this cloud coming out of the caldera, captured on the
That’s resuspended ash from earlier eruptions. Yes, volcanoes can still be hazardous decades after they erupt. Several weeks ago, the Alaska Volcano Observatory noted resuspended
The VEI 6 eruption of Katmai/Novarupta in 1912 was the biggest eruption of the 20th century. Today, its ash still causes problems.