Indiana Weather Outlook 3-21-18

Cold air continues to barrel into the state today, and we have more moisture around a straggling upper level low causing all sorts of problems for central and southern Indiana this morning. This upper low is behind the strong east coast system that is hitting today, and it looks to ride up the west side of the Appalachians while the nor’easter part of the system moves up the coast. That little shift is what is bringing the snow to Ohio and parts of Indiana today. A coating to 2” can be seen south and east of a line arcing from Fort Wayne, to Kokomo to Indy to Louisville. In southeast Indiana, we can see 4-5” or perhaps more combined in spots through midday and early afternoon. This action started back last night. The rest of the state will see no precipitation, as this is wrapping around the backside of the upper low, which is already over eastern OH and western PA. However, even without precipitation, we still stay cloudy and cold in all other areas. The chill holds through the end of the week.

Our next system moves in for Saturday. Rain totals will easily be .25”-1” over the entire state, unchanged from yesterday’s thoughts. However, we think moisture can be drawn out a little longer, lingering into early Sunday morning.  All rains should be done by mid-morning Sunday but as temperatures fall behind the front, we still can’t rule out the possibility that the precipitation ends as wet snow over a large part of the state. We can see minor accumulations of a coating to an inch once again.

Dry for Monday of next week, but we have another system coming in for overnight Monday night through Tuesday. This event can bring .05”-.5” precipitation to 70% of the state. Models are less confident in how the pattern unfolds from there, bringing moisture in sooner for Wednesday and less moisture for Thursday. At this point, we think it best to look at the entire midweek period next week and say we expect 2 waves of moisture to come through. Totals will be anywhere from .1”-.6” with 70% coverage…but timing of each wave is a little up in the air. We should still be on track to get a dry day in for next Friday.

Moderate to heavy rains arrive for Easter weekend on the 31st and 1st. We are raising rain totals to .5”- 2” over 100% of the state. This will be a very moisture laden system. But then we go dry for the 2nd through the 5th for the remainder of the extended forecast window.



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