Sendai is some 50km away from Fukushima and the population center is well outside the evacuation area. Tamura and Minamisoma are the only cities within it.
The tsunami destroyed 400k structures and decimated Sendai, which (note that the figures in the linked article are in 10s of people and structures as indicated at the top of the figures). Some 300k people and 100k homes were within the inundation, ~25% of the local population.
In the Fukushima evacuation area the majority of the surface is less than 4x background radition ~1uSv/hr. In discussing an ongoing disaster please look at this video: