...Hard freeze conditions to continue through the morning... .Arctic high pressure will continue to build into the region this morning. Temperatures have fallen into the teens to low 20s and hard freeze conditions are expected to continue through late this morning. ...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 11 AM CST THIS MORNING... * TEMPERATURE...Low temperatures of 15 to 20 degrees. * IMPACTS...Prolonged exposure to these conditions may result in hypothermia and frostbite and could harm pets and outdoor animals. Exposed pipes and those along exterior walls will have the potential to freeze. Sensitive vegetation exposed to these temperatures will be killed.