John J Lyons, USGS Alaska Volcano Observatory, Anchorage, AK, United States, Matthew R Patrick, USGS, Hawaiian Volcano Observatory, Hawaii Volcanoes National Park, HI, United States, David Fee, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States and Hannah R Dietterich, U.S. Geological Survey, Alaska Volcano Observatory, Anchorage, AK, United States