An analysis of satellite radar data shows that almost 11 inches of uplift has occurred over a broad area just east of the Mt. Edgecumbe crater since 2018 -- as magma "intrudes" into the crust below.
Seismologists have detected a "swarm" of earthquakes below the long-dormant Mt. Edgecumbe volcano near Sitka, whose last major eruption was 4,500 years ago. Next comes a long period of "watchful waiting" for additional activity -- if any.