TORNADO WARNING extended for south-central Medina and northwestern Frio counties until 7:15 a.m.
SAN ANTONIO – The threat of life-threatening flash flooding continues across parts of South-Central Texas this morning as another round of torrential rain moves across an already saturated region, prompting the National Weather Service to issue its highest level of excessive rainfall risk for parts of the area.
Flash Flood Warnings remain in effect until 8 a.m. Wednesday for Medina, Uvalde, southwestern Bandera and southeastern Real counties, where flooding is already occurring. A separate Flash Flood Warning is in effect until 9:45 a.m. for Kerr and Gillespie counties.
Forecasters warn the most dangerous conditions may still be ahead as slow-moving thunderstorms continue to redevelop over the same locations.
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A High Risk for excessive rainfall has been issued for portions of South-Central Texas, signaling the potential for widespread, life-threatening flash flooding. The greatest concern is centered along the U.S. Highway 90 corridor, the western Hill Country, southern Edwards Plateau and the Rio Grande region, where repeated rounds of thunderstorms could dump another 10 to 20 inches of rain in localized areas.
The additional rainfall is expected to fall on ground that is already saturated after days of heavy rain.
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Radar estimates show many locations in Medina, Uvalde and Bandera counties have already received more than 12 inches of rain, leading to flooded roads, numerous swift-water rescues and rapidly rising creeks and rivers.
Forecasters say another round of slow-moving thunderstorms through Wednesday morning could produce considerable to locally catastrophic flash flooding, especially in communities that have already seen significant rainfall.
Although the greatest flood threat remains west of San Antonio, heavy rain is possible across much of South-Central Texas, including the San Antonio metro area. Exactly where the heaviest rainfall develops will depend on where thunderstorms repeatedly move over the same locations.
Flood Watches remain in effect through at least Thursday across much of the region, and additional Flash Flood Warnings are expected as storms continue to develop.
River flooding is also becoming a growing concern.
The Sabinal River north of U.S. Highway 90 is rising rapidly as heavy rain continues to fall and is forecast to reach moderate flood stage early Wednesday, exceeding Tuesday’s crest.
Meanwhile, the Frio River at Concan is also rising quickly and is expected to reach minor to near moderate flood stage before beginning to recede later Wednesday.
Emergency officials urge residents to avoid unnecessary travel, especially overnight, and never attempt to drive through flooded roadways. People living near creeks, rivers and low-water crossings should closely monitor weather conditions and have multiple ways to receive warnings as the dangerous flood event continues.
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