Nov 11, 2013 10:56 AM by Dave Baker
The coldest air of the season is on the way and will be here late Tuesday. The first freeze could happen over the northern parishes Wednesday morning. Another light freeze over areas north of I-10 could happen Thursday morning.
It all starts with a cold dome of high pressure currently centered over central Canada. Temperatures have been hovering below zero across the prairies of Manitoba and Saskatchewan. A quick moving system will spin up and move eastward along the Canadian border today and open the door for all of the cold air to spill southward. A cold front will approach the region late Tuesday, first bringing gusty winds Tuesday afternoon. The cold air will follow Tuesday evening with temperatures dropping into the 30s by Wednesday morning.
Wind chills early Wednesday will drop into the upper 20s. Temperatures in Lafayette should hover in the mid 30s, with lower 30s across areas north of US 190. Highs will only recover into the mid to upper 50s for highs on Wednesday with gusty north breezes. Wednesday night, the skies will remain clear, but the winds will diminish. Temps could drop to near 30 near Alexandria, near freezing to the I-10 corridor, low to mid 30s between I-10 and LA 14 and temperatures near 40 at the coast. Because of the light winds, patchy frost could be possible as far south as Lafayette.