Hard Freeze Warning is in effect through Noon on Tuesday across the entire Four State Region... ...Wind Chill Advisory is in effect through Noon on Tuesday across the entire Four State Region... While the winter precipitation begins to wind down tonight across the Four State Region, bitterly cold temperatures and dangerous wind chill temperatures will be felt areawide overnight. Look for low temperatures tonight in the single digits near and north of the I-30 Corridor of Northeast Texas, Southeast Oklahoma and Southwest Arkansas, with low temperatures ranging from near 10 degrees to the middle teens across the remainder of Northeast Texas, Northern Louisiana and South Central Arkansas. Combine these temperatures with strong northerly winds near 10 to 15 mph with higher gusts and wind chill values will fall to near 5 degrees below zero across portions of Southeast Oklahoma and Southwest Arkansas to near zero to the lower single digits further south near the I-20 Corridor of Northeast Texas and Northern Louisiana and points south of the corridor tonight. Temperatures across much of the Four State Region may not climb above freezing until midday Wednesday. This means that much of the ice and snow covered road surfaces will remain covered through at least the first half of Wednesday. Hazardous driving conditions will continue through at least Wednesday Morning across much of the region as a result. If melting is observed across portions of the region on Tuesday, then that melt on road surfaces will rapidly refreeze after sunset Tuesday evening, resulting in black ice conditions on area road surfaces that will impact travel Tuesday night through Wednesday morning. Road surfaces will not improve until temperatures can remain above freezing long enough to evaporate wet road surfaces, hopefully sometime later in the day Wednesday.