Funny FEMA should just now come up, I just now spent some time considering FEMA! It is very surprising to me that much emergency infrastructure exists, without providing very basic things to households like regionally relevant emergency kits and something like one month of MRE + Water. Rather than it sitting in some warehouse... because distribution becomes a very immediate problem. Not forced but, offered to anyone…
https://www.state.gov/global-community-liaison-office/crisis...>
https://www.outsideonline.com/outdoor-gear/how-to-build-the-...>
Many of the specific supplies that are useful are dual-purpose, and may include preserved or shelf-stable food, camping, recreational, or work-out supplies.
The most critical needs are usually fairly brief, the day or two before rescuers can reach people, or during which evacuations are ongoing. Those in more remote regions may want to keep longer-term stores, perhaps a few weeks worth of supplies, but will likely have much of this on hand already.
Keep in mind that a go-bag is to go, and if it weighs much over 25 kilos / 50 lb or so, becomes a challenge to movement itself.