BRAZORIA COUNTY - A levee just south of Houston has breached, prompting an immediate evacuation. 

A post on the county's official Twitter account warned residents that the levee at the Columbia Lakes subdivision had breach and urged them to  "Get out Now!!"

pic.twitter.com/sUTyXBzer9

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— Brazoria County (@BrazoriaCounty) August 29, 2017

According to KCRA, major roads throughout the county are closed, including large stretches of Highway 35, which was being used as an evacuation route. County officials issued a mandatory evacuation order on Sunday for the entire western half of the county.