A combination of the suffering in the aftermaths of hurricanes in Puerto Rico & the Bahamas and travel down a road where the storm drains were being replaced led me to imagine an inexpensive 'hurricane safe' made from a short, pre-formed, concrete pipe section with a strong lid. This must be firmly anchored into rock or a concrete slab. It does not need be completely water-tight and is not for sheltering people - it's for sheltering a week or two of food, water, clothes, and other necessities. Because it's strong but not water-tight these necessities should be double-bagged.
The recommended procedure is to place all necessities in it right before seeking shelter. After the storm, the members of each household return, extract their supplies and set up camp. This reduces suffering while the government and outside aid get their acts together clear airports, roads, harbors, and other major infrastructure so they can start necessary evacuations & get aid flowing. If some basic tools are included, temporary construction of sun/rain shelters from boards and other rubble becomes possible.
I wonder if there's an engineer out there who needs a public-service project?