According to the latest information from the Washington State Department of Health, as of 1pm Thursday,

an emphatic "no."  Tim Church and Donn Moyer of WSDH said state health officials have seen no increased levels of radiation from the "plume" from Japan that is expected to reach areas of the Western US sometime in the next few days.   Dr. Cliff Mass of the University of Washington Atmospheric Sciences says, "there's little threat that a significant radiation threat exists for the Pacific Northwest...normal atmospheric mixing, radioactive decay and other factors will insure that concentrations would decline to very small amounts..."    the WSDH has an updated site for information, questions and more: