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10:45 PM Winter Weather Update & the latest Overnight Forecast

A relatively narrow 10-20 mile wide band of heavy snow continues to impact portions of south central Texas late this evening.  This band of heavier snow is forecast to begin weakening overnight as much drier air filters in behind it from the north, but it’s shown no signs of doing so just yet.  This will bear watching during the overnight hours; however, local forecasters are still pretty confident that we’ll end up with mostly a rain/snow/sleet mix for all of southeast Texas overnight and into tomorrow morning. Southeast Texas may see minor snow accumulations on elevated surfaces and the grass tonight, but I don’t think we’re going to see a repeat of what happened in College Station.

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For deep south Texas/Rio Grande Valley region, round 2 will begin to take shape overnight as temps begin to drop near or below freezing.  Plenty of moisture will remain in place overnight, and lift from the upper-level disturbance will combine with surface temps dropping down to the mid-30s which will be a changeover from rain to mostly snow later tonight.  The western Rio Grande Valley region will have the greatest chance of seeing accumulations exceeding an inch with lesser amounts the further south you are.

Snowfall is also expected in South Texas into the Coastal Bend late tonight and on Friday morning. The highest probability of accumulating snowfall will actually be in southern sections of South Texas and the Coastal Bend; bordering the Rio Grande Valley and Deep South Texas. One to two inches of snowfall will be possible, including in Corpus Christi. As the winter weather earlier tonight in Central Texas and the Brazos Valley showed, heavier snowfall can accumulate on roadways and bridges even with temperatures above freezing. Surface temperatures will be near freezing, so slick spots will be possible. Once the heavier snows end we should start to see melting fairly quickly.

Finally; we are expecting a cold night across all of Texas. The snow cover in Central Texas and the Brazos Valley may help make those locations a tad colder than indicated here. Remember to bring your pets and plants indoors; leave your faucets dripping for your pipes, and make sure your elderly/susceptible neighbors have a warm place to sleep.

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Jenny Brown

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