This same thing happened in Puna and the power was promptly abused to keep local residents away from even observing the slow moving disaster. It was also used to keep the press and local residents from documenting the historic volcanic eruption among many other things. Now it's being used to give power to squash a protest. Broad expansions of power by government should be avoided in almost all situations. It's almost always a sign that peoples rights are going to be trampled on. https://www.civilbeat.org/2019/07/ige-sued-over-mauna-kea-emergency-proclamation