Chicago NWS
Taken altogether, this leads to an
expectation for highly variable ice accumulation amounts across
our area, ranging from a few hundredths near the Wisconsin state
line to perhaps locally 0.25 to 0.33" in the wake of convective
cores (near/south of the I-88 corridor?). Regardless of the
eventual uneven ice amounts, we will have to issue a Winter
Weather Advisory for some if not all of our area for the
Wednesday evening into early Thursday morning timeframe for
hazardous travel conditions, downed tree limbs, and localized
power outages.