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Thunderstorm watch in effect for parts of South Texas

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SAN ANTONIO – A trough of low pressure is moving west across the Mexican mountains Sunday evening. Showers and thunderstorms have already begun developing along this disturbance and will continue to push into South Texas Sunday evening.

Ahead of this system, the Storm Prediction Center has issued a slight risk for severe weather.

A thunderstorm watch is in effect for parts of South Texas Sunday evening until midnight.

As the storms move through the Rio Grande Valley, they will produce heavy downpours, frequent lightning, gusty winds and large hail. This strong to severe activity is expected to reach the San Antonio area late Sunday night some time between 10 p.m. and midnight.

As the storms move through the central portions of South Texas they could weaken, but are still expected to produce locally heavy rainfall and damaging wind gusts.

This storm system will move out of the area by late morning Monday and most places will see a break in the rainfall Monday midday and early afternoon. 

A few more storms and scattered showers are possible by late Monday afternoon and into Monday night.