At 5 p.m. on Feb. 9, 2021, the official temperature at DFW Airport dipped below freezing. With the exception of a brief three-hour stretch, it would not eclipse 32 degrees again until 12 p.m. on Friday, Feb. 19.In Part 1 of KRLD’s series looking back at the winter storm that hit Texas in February 2021, KRLD Chief Meteorologist Dan Brounoff explains how temperatures got so cold for so long.