I think Weather Nation is on the “sub channels” of regular local stations—for example I think it’s on 7.2 of Ch 7 in Boston—and if you have cable like me, it’ll show up somewhere in the 200s.
You're right. With Directv, we have it on two channels (361 and 362) now that the WC is gone. But we can also get it on 13.3 of channel 13 here in Lynchburg....I guess with rabbit ears.