Widespread rain and storms will become common later today across the western half of Texas, with spotty showers and storms across the eastern third of the state. We do not expect severe thunderstorms for most of today. That expectation will shift tonight as the risk of severe thunderstorms, with damaging winds and brief tornadoes, increases into the morning hours on Monday with a fast-moving line of storms that’ll race east across Texas.
This Morning, Afternoon, and Early Evening
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Scattered to numerous showers and storms will move north across the eastern third of Texas this afternoon and evening. Limited instability will keep activity behaved. A large area of rain and storms will make for a wet day and evening across the western half of Texas. Heavy rain is possible, with multi-inch rainfall amounts by Monday morning across the Panhandle, West Texas, Permian Basin, Concho Valley, Big Country, and Northwest Texas. Flooding is possible, and one should assume there will be high water at the typical low-water crossings and trouble spots.
Severe Storm Risk Increases Late Tonight in western half of Texas
Late this evening, likely after 10 PM central time, the risk of severe thunderstorms will increase in the Permian Basin and perhaps West Texas. That’ll be due to the arrival of a robust upper-level storm system, which will help the atmosphere destabilize tonight – even with the lack of sunshine and ongoing rain.
A thin line of thunderstorms will materialize and begin racing eastward early Monday morning. Strong wind shear and just enough instability will likely result in some storms in the squall line, producing damaging wind gusts of 60 to 70 MPH. Spin-up tornadoes will also be a concern within the squall line, where we have bowing line segments or indications of circulations on the leading edge of the line.
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Not all storms will be severe as the line races east Monday morning across Northwest Texas, West-Central Texas, Big Country, Permian Basin, Concho Valley, and the northern Edwards Plateau. By 6 AM Monday, the line of storms will be approaching Interstate 35 from near Oklahoma City south to Gainesville to the D/FW Metroplex into the Hill Country.
Storms move into the eastern half of Texas after sunrise Monday
The most favorable combination of ingredients may continue to support a severe weather threat in the form of damaging winds and spin-up tornadoes across North Texas, Texoma, and north into Southern and Central Oklahoma.
Farther south into Central Texas, the Brazos Valley, and eventually much of the eastern half of Texas Monday morning into Monday afternoon, the line of storms will continue racing east. However, we anticipate the squall line will outrun the comparatively higher amounts of instability. That should reduce, but not wholly eliminate, the threat of localized damaging winds and a spin-up tornado.
Gusty winds are likely along the line of storms as they quickly race east at over 50 MPH on Monday morning. By early Monday afternoon, the line of storms will exit Texas to the east – with skies rapidly clearing behind it amid gusty west winds. Scattered thunderstorms may continue on the back of the departing upper-level low in the Texas Panhandle through Monday afternoon.
Cooler and Windy Monday; Strong Cold Front Arrives Tuesday
Cooler temperatures and gusty west winds are likely behind the storms on Monday, with a much stronger cold front arriving on Tuesday and Wednesday. A freeze is expected across at least the northwestern third of Texas on Wednesday and Thursday mornings, with frost/isolated freezes possibly entering Hill Country, Brazos Valley, and East Texas. No winter mischief is expected in the form of ice, sleet, snow, or abominable snowman.
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