Cold air is here. Today will be a bit of a transition, and tomorrow will be the coldest day. Temps today actually top out in the teens, but will be falling this afternoon. We go below zero tonight and stay there through at least midday Friday over a good chunk of northern Indiana. We go below zero in southern Indiana too, but should be able to see temps bounce a little bit more there, and not spend as long of period sub zero. We should see some sunshine through the period, particularly tomorrow and Thursday, but the cold will be impressive. Strong winds that built in yesterday will hold through the period as well, so dangerous wind chills will be seen. This is not new information…the cold has been well advertised, if not overhyped for most of the past week. It will be the coldest air in here since the early to mid-90s. The maps below shows morning lows Thursday morning (top map)…likely the peak of the cold air, and by association, the peak of the worst wind chills (bottom map).
Temps start to moderate Friday but stay well below freezing. We should see at least partly sunny skies, but may have some high cloudiness slowly pushing in. For Saturday, clouds will be on the increase and we start to turn much warmer. The entire state should be above freezing for Saturday. Clouds will dominate Sunday, and we get a little warmer still. However, we are pushing the start of our next precipitation event back just a bit. Rain looks to arrive later in the afternoon or evening Sunday, and then it continues all the way through Monday. Rain totals will be from .25” to .75”, and coverage will be nearly 80%. We do feel this entire event will bring liquid precipitation and no snow.
We cool a bit for Tuesday with clouds as the main weather player. Then for Wednesday (the 6th), we have another well-organized front sweeping through from west to east. This has just enough mild flow coming up ahead of it to likely split the precipitation type by region of the state. We think we can see .25”-.5” of rain from near I-70 south, and 1”-4” of snow in the north. Still, the front moves through quickly. We will be dry, but much, much colder for next Thursday.
The extended forecast has one major precipitation event with it. While cold air continues to blast in to start the 11-16 day period, we really don’t see good moisture until we get to the 10th and 11th. There we have a potentially strong storm complex lifting across the state from SW to NE. This will bring snow, and perhaps a lot of it. Behind the storm, we see another leg down in temps, with arctic air trying to return to the eastern corn belt.