That is exactly what happened here, see New Regional Map in Missouri May Help in the Event of a Disaster. It is not rocket science, and I love the idea that the information is displayed on a map! The challenge, not mentioned in the article, is not so much gathering the information, but keeping it current.
Another item in the story above is the notation that not every care center has a generator. This is the type of thing that needs to become a law in every state and city. People need power to survive in our increasingly digital age — not to mention the warmth that some people need.
Lastly there is this photo from the current Hurricane Harvey disaster, women in a flooded nursing home. While some people suspected it was fake, think about it. Where would old people go who live in a one story facility? They don't have bunk beds and they are not climbing on the roof.