A dramatic cold blast will reach into the southern Plains today.Temperatures will be 20-40 degrees colder, including in Oklahoma City. Strongwinds gusting between 40-60 mph will add to the chilly feeling.

Meanwhile, South Texas will stay very warm today with highs well into the80s and 90s and a decent amount of sunshine. A gusty breeze, persistent dryweather and the warmth will actually create a fire threat through the RioGrande Valley today. Residents are urged to avoid outdoor activities thatproduce sparks, because the winds could rapidly spread any fire thatstarts.

Story by AccuWeather.com Meteorologist Meghan Evans.