Northern Exposure is the otherside Twin Peaks. Hits the same comfy note just at the opposite spectrum.
I had the same thought. Like its friendlier younger sister. I think Twin Peaks fans realised early on the main point of the show wasn't so much who killed Laura Palmer, but the weird and wonderful characters in the place. Northern Exposure doesn't really have a One-eyed Jacks or a Bob... But it does have a Bigfoot character that could be right out of it.
Both shows were filmed around the same time and place in WA state and, as you note, had a kinda similar surrealist vibe. Which made watching them togeather kind of strange. Like Joel and his friends adorable hijinks were happening just down the street from a brutal murder investigation.