Chris Coleman, ERCOT Senior Meteorologist
Updated Friday, December 7
*** The Winter Outlook is now available on the Seasonal Updates Page ***
General Discussion: Major precipitation event will impact all of ERCOT today and still much of ERCOT on Saturday. Numerous showers and thunderstorms today over most of the state. Flash flooding potential for much of the eastern half of Texas over the next 24+ hours. Some mixed frozen precipitation (snow, sleet, freezing rain) in the Panhandle and northern portions of West Texas. Significant snow accumulations likely in the Panhandle on Saturday. Ice could impact wind generation as far south and east as Abilene and Sweetwater. Precipitation will move out of ERCOT Saturday night. Dry weather Sunday through next Wednesday prior to the next front bringing more rain chances around Thursday of next week. Temperatures will be below normal through early next week – especially the daytime highs through this weekend. Warmer the middle of next week.
Today: Rain and thunderstorms increasing in coverage and intensity today and tonight, impacting the vast majority of the state. Heaviest rainfall and flash flooding potential in Central Texas, Coast, and parts of East and South Texas. Some thunderstorms could approach severe limits along and near the Coast later this afternoon into tonight. Strong winds will be the main threat, though an isolated tornado cannot be ruled out. Temperatures ahead of the front will be in the 70s and 80s this afternoon, Coast and South. Behind the front, temperatures will move very little today, generally between 45 and 50 degrees mid-afternoon from Dallas to San Antonio. Most of West Texas will see afternoon temperatures in the 30s. Mixed rain, sleet, freezing rain, and snow all possible in the Panhandle and portions of the West and Far West zones, with freezing potential increasing overnight tonight.
This Weekend: Snow in the Panhandle through Saturday morning. 2-4 inches common with some higher totals possible, especially between Lubbock and Amarillo. Wichita Falls to Abilene will be very close to hitting the freezing mark tomorrow morning with rain falling – meaning some ice is possible. Showers and thunderstorms will move east of Austin to San Antonio early Saturday, but continue into the afternoon along the Coast and into South Texas. North Texas will see rain showers tomorrow morning and afternoon – generally light – but possibly a bit of sleet mixed in. Chilly across ERCOT Saturday afternoon, with 30s in West Texas, 40s from Dallas to Austin, and 50s Coast and South. Clouds will hang in for most of the weekend, with clearly slowly spreading across the state on Sunday. A bit warmer Sunday afternoon but still on the cold side of normal for December.