Chris Coleman, ERCOT Senior Meteorologist
Updated Tuesday, November 12
General Discussion: The strongest cold front of the fall season moved through ERCOT on Monday. Bitterly cold temperatures and wind chills behind the front. It was 7 degrees in Amarillo this morning! Dallas dipped to 22. 30s in the Rio Grande Valley this morning – with some wintry mix to the precipitation. Many locations will be even colder tomorrow morning (especially Central, East, and Coast). And warming beyond that is limited, as a second (weaker) cold front is due on Thursday. The weekend won’t be quite as chilly but still below normal for this time of year. Next week is likely to trend warmer.
Today: Still some lingering light rain and wintry mix in South Texas this morning. That precipitation will be slowly diminishing this afternoon and ending well before evening. Very chilly temperatures this afternoon, with highs in the 40s across almost the entire state. With the thicker clouds, Valley locations will struggle to maybe 40-42 degrees this afternoon – and some may not reach 40. Roughly the northern two-thirds of Texas will see at least some sunshine this afternoon – but chilly regardless. Winds, however, will be lessening this evening and light tonight. Where the clouds are mostly or completely absent, temperatures will drop rapidly. Widespread, hard freeze expected for Austin, San Antonio, and Houston; however, if clouds linger or increase overnight, may not get quite as cold as forecast. For now, expecting mostly clear skies for all of the large cities overnight.
Tomorrow: Much of the clearing that occurred on Tuesday will be replaced by clouds back on the increase on Wednesday. After another very cold morning, temperatures will be limited in their warming due to cloud cover. More 40s than 50s on Wednesday afternoon. Rain developing Wednesday night – especially South Texas. The rain will increase over a larger area on Thursday.