Scientists are urging people who live in southcentral Alaska to begin preparing for a possible eruption of the Mount Spurr volcano.

The Alaska Volcano Observatory said now is a good time for Alaskans to “familiarize themselves with the possible hazards of a Spurr eruption” following last week’s announcement that the likelihood of an eruption has increased.

“The major hazards to Alaska residents from Spurr would be from ash risk to aviation and possible ashfall,” the observatory said in a Wednesday post on X.