I'm about 20 miles E of the iboc spewing AM 670 in Chicago.
Unless the excrement spewer is broken or in "game mode", WSM is badly trashed here.
There are bright spots, analog tuned radios can slide down toward 640 and miss 90% of the intentional, repeated, malicious, willful jamming,
and those with loop antennas can null as long as their location puts WSM more than 45 degrees off from 670.
For me, that's 90 degrees, which is fine here in the house, but I havent figured out how to get that "true-tracking" compass azimuth loop working on the roof of my car yet. Trying to listen to WSM on the way to work at night is pretty frustrating.