wow, finally a decent warm-up!
Oh wait, it's Spring 2019... back into the trash cold a couple days later that will probably lock in for the rest of the month. Barely into the 40s lakeside... absolutely brutal stuff.
GFS isn't any better. In fact, it's showing possible record cold towards the end of the month into the beginning of May. I've accepted that this is the new normal now though. As the arctic continues to warm at an alarming rate, the midwest/east will be its dumping ground for cold. Warming waters combined with melting sea ice contributes to the non-stop ridge that has been present in Alaska and the Arctic, and that ridge forces the cold south. The cold has to go somewhere after all, and it takes direct aim at us... ALWAYS. As the rest of the planet continues to warm, average temperatures in the eastern CONUS will continue to decline, to the point where April snows (possibly even May snows) might become a common occurrence. Again, this is all related to climate change and a warming arctic/melting ice caps. Its effects are already irreversible, so we may as well accept it at this point. It will only get worse as time goes on too, perhaps even catastrophic at some point.