You can try what I did, make one of those godzeye AM antennas with a 20pF - 100pF tuning CAP. Here's a much smaller version of what I've built,
https://www.youtube.com/watch?v=3sDtmmRHzZc . Here's one from PVC,
https://www.youtube.com/watch?v=Wnkf_gQQwwg So, more than one way to make one. Unfortunately, being inside an aluminum sided house, this also brings in more noise that generated within this house. Outside, on the other hand, is a different story. Works super that way. You might have to experiment though which variable capacitor works for the widest part of the AM BC band. Oh... Pinterest has these,
https://www.pinterest.com/pin/345158758913671908/ Anyone have more loop-like antennas to show? They do seem to make the AM band more listenable with area-wide T-storm crashes constantly. Oh yeah... Archive.org should have some ideas as well,
https://archive.org/search.php?query=am%20loop%20antenna