A reactor accident sends fallout downwind. Knowing if you live inside a plume, the shelter window, and when to leave.
Concrete moves that lower your Vulnerability. Add any of them and we'll track it as an action on your threat list.
Deep DiveThe mushroom cloud gets the fear. The thing that actually kills people downwind is a dose — and a dose is just rate times time, which are two levers you can shrink.
PrimerThe danger travels downwind, and whether it reaches you comes down to distance and wind. Answer that first, then a cheap, specific kit does the rest.
All 56 U.S. reactor sites and the ground downwind of them.
A national view — this is one of 410+ layers in Area Recon. Open it to zoom to your address, then add the hazards, infrastructure, terrain and resources around you, and read the real numbers for your county.
Explore in Area Recon →Add it to your personal threat list, score it for your own household, or pull the real hazard data for your county.
