...Another Arctic Airmass Surges into the Area ... .Another frigid Arctic airmass is over the region and will provide bitterly cold temperatures. Temperatures will plunge into the teens and 20s tonight and will be similar Wednesday night. ...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...HARD FREEZE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM CST THURSDAY... * 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. These temperatures will be similar Wednesday night. * DURATION...Freezing conditions will likely last for through Noon today and then 12 to 18 hours tonight into Thursday morning.