10:20 PM CDT | September 21, 2018
A dangerous flash flooding situation is ongoing across parts of Texas and Oklahoma. There are numerous reports of flooded roadways and road closures across the Dallas-Fort Worth metroplex right now. Highway 75 in Plano was shut down after 9:00 PM due to water covering the roadway. Several vehicles were stranded according to the report that was forwarded by the National Weather Service. Other reports in the last hour or so include road closures in Flower Mound, Southlake, Richardson, and Denton. Before 10:00 PM, it was reported that I-35E in Denton has been shut down at State School Road due to water covering the roadway. Additional impacts can be expected tonight as heavy rain continues to track across the area.
Today's rain has been associated with a surface low in western North Texas and a surface boundary that stretches from West Central Texas into Oklahoma. A bit of good news is that the recent model guidance has trended more progressive with the low. Earlier runs showed it gradually pushing eastward to the I-35 corridor by late Saturday afternoon or evening. The latest guidance has sped it up and show it moving into the I-35 corridor Saturday morning. The faster the low pushes eastward, the sooner drier air will filter into the area. On the backside of the surface low, expect northwesterly winds and cooler temperatures. Some locations in western North Texas will likely struggle to get into the 70*F's on Saturday.
That is all for tonight. Stay safe, and please remember: Turn Around, Don't Drown. For the latest official weather information for your area, please visit the National Weather Service website. You can also watch the National Weather Service Product feeds here. Just find your county and click on the associated NWS office.