...Another Arctic Airmass on the Way ... .Another frigid Arctic airmass will move into the area today. Temperatures will plunge into the teens and 20s tonight. ...HARD FREEZE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO NOON CST WEDNESDAY... * TEMPERATURE...Lows will fall into the mid teens to lower 20s along and north of the I-10/12 corridor. South of I-10 lows will range from 20 to 25. * DURATION...Freezing conditions will likely last for 12 to 18 hours over much of the warned area.