North Central (remember them?) ORD to MKE in January 198? through a blizzard. The pilot got clearance to fly under the ceiling so he could see the ground and navigate along the highway from Racine north. Roller-coaster gusts felt like we were going to be driven right down on top of the silos we passed over, clearly visible out the windows. Rough landing, overhead latches released, skidded a little as we slowed... Yikes!!