Chris Coleman, ERCOT Senior Meteorologist
Updated Tuesday, April 20
General Discussion: A strong cold front will be moving through the ERCOT system today and tonight. While not much precipitation will be associated with this front, temperatures will be significantly colder in the front’s wake. Wednesday morning will be the coldest period this week. Just as soon as temperatures try to rebound warmer, showers and thunderstorms will also increase, limiting the daytime warming Thursday and Friday. However, as the precipitation winds down, temperatures will trend much warmer this weekend into early next week. That being said, no sustained periods of widespread, extreme heat are expected anytime soon.
Today: A strong cold front will move through West and North Texas this morning, reaching Central Texas this afternoon, the Coast this evening, and moving through the Rio Grande Valley late tonight. The front may trigger a few snow flurries or patchy, very light freezing drizzle over the Northern Panhandle this morning, but that’s about it for precipitation. A wide range of temperatures will be seen across the state this afternoon. 50s in West Texas, near-60 in Dallas, mid-70s to mid-80s in Central Texas, near-80 in Houston, and generally in the 80s in the Rio Grande Valley. Mostly clear skies tonight will allow temperatures to drop quickly after sunset. 30s and 40s for lows over most of the state tonight, though warmer in South Texas. Freezes will be limited to the Panhandle and a few locations in northern West Texas.
Tomorrow: After a chilly start, sunshine will help warm most of ERCOT into the 60s and 70s Wednesday afternoon. Not as cold Wednesday night.