With more than two decades of experience studying the unique weather patterns in North Texas, KRLD Chief Meteorologist Dan Brounoff says forecasting winter weather in the region is complex. He has come to relish the challenge.

The National Weather Service in Huntsville issued a winter weather advisory Monday for all of north Alabama and is forecasting cold temperatures through the week with the possibility of snow late Thursday into Saturday morning in north Alabama.

Meteorologists will sometimes use the term TROWAL, short for "Trough of Warm Air Aloft," to explain a critical feature in winter storms. Understanding TROWAL helps clarify the certain dynamics of a storm that can lead to significant impacts.