Lightning struck the LaSalle nuclear power plant in Illinois Wednesday during a thunderstorm. The plant lost offsite power and venting of radioactive isotopes was commenced. Potrblog has posted a video, and apparently radioactive rain leaked into his basement and caused elevated Geiger counter readings indoors.
There is a cold front moving across the eastern part of the country, with associated rain and thunderstorms. It is likely that radioisotopes from this nuclear release have been caught up in this cold front.
Stay out of the rain!