A small portion of the first 25 hours of Fukushima’s radioactive plume superimposed over Pilgrim Nuclear Power Station. The plume traveled about 150 miles in the first day. 80% of that disaster’s fallout was blown out to sea. 80% of the total contamination was to the Pacific Ocean. – plume data from Lawrence Livermore Laboratory, U.S. Department of Energy.
Of course there is no way to know which way the wind would be blowing if Pilgrim were to suffer a severe accident. Neither on the fateful day nor during the time required to control the releases (approaching three years in Japan, with the end not yet in sight).