In normal situations it can be difficult for those with hearing loss to understand what is being said in order to decipher what is going on. In an evacuation, or a sudden change to their routine which may cause ongoing adjustments to their life, it can be even more disorienting.
This article from the Living with Hearing Loss Blog offers excellent advice and ways to support those with hearing loss .
Another great idea (on the endless list!): This college student who is herself hearing challenged, came up with a mask to help those with hearing issues.