NukeCast – If it happened today, where would the fallout go
I built NukeCast because I’ve always wanted a tool that answers one question fast. If it happened today, where would the fallout plumes go and where would you drive to get out of it. NukeCast uses weather forecasts to drive a Lagrangian particle dispersion model with wet and dry deposition. Scenarios are defined by selecting strike site(s) and yield(s); the setup uses preselected US sites and yields based on FEMA emergency data. Outputs are shown as estimated ground level radiation dose at the surface over a 12 hour integration. Free to use with limits, and a paid tier if you want more…
In plain words
NukeCast is a tool that models nuclear fallout dispersion using current weather forecasts and particle physics simulation. Users select from preselected US strike sites and weapon yields based on FEMA data to see estimated ground-level radiation doses over a 12-hour period. It answers where fallout plumes would travel and which directions offer safety. The tool is designed for anyone wanting rapid answers about potential fallout scenarios. A free tier with limits is available, plus a paid tier for additional modeling runs.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I built NukeCast because I’ve always wanted a tool that answers one question fast. If it happened today, where would the fallout plumes go and where would you drive to get out of it. NukeCast uses weather forecasts to drive a Lagrangian particle dispersion model with wet and dry deposition. Scenarios are defined by selecting strike site(s) and yield(s); the setup uses preselected US sites and yields based on FEMA emergency data. Outputs are shown as estimated ground level radiation dose at the surface over a 12 hour integration. Free to use with limits, and a paid tier if you want more runs/features because AWS compute time ain’t cheap.
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