Boy, this snow season has gotten off to a rollicking start. It’s been a while since we’ve had to deal with multiple legitimate winter threats prior to Thanksgiving, but that’s the case this year. (December is also looking quite active from a wintry precipitation perspective).
As for Saturday’s event, confidence is too low to issue an initial snow “zone” map. The overall idea remains here that the best shot of accumulating wet snow will likely fall from north-central parts of the state into the northern half of Ohio, but the nature of the event will likely result in some “haves and have nots.”
Note the upper low is poised to track along the I-70 corridor, per this evening’s GFS model run. This looks reasonable to us.
With only marginally cold air in place, this is the kind of setup that can help manufacture air cold enough to result in a “thump” of wet snow for portions of the region- especially if heavier precipitation rates are involved. This is also the kind of event that would likely lead to banding features as opposed to a more “uniform” snow shield (hence the “have and have nots” that will likely occur).
At the end of the day, an accumulating wet snow event is most certainly still on the table for portions of central Indiana, but we need to factor in a couple of additional model runs before publishing our initial snow zone map.
More overnight or early Friday morning…