A very slow moving upper level low, currently centered over northwest Texas will continue to bring chances for periods of heavy rainfall today.  As it has been over the past several days, rainfall will be hit or miss, but those who get rainfall will see quite a bit of it in a very short amount of time.  Highest rainfall totals on Friday occurred across parts of western north Texas with areas in and near Throckmorton seeing up to 7 inches of rainfall, and the DFW metro area which picked up 3+ inches in some areas.  Flash Flood Watches have been issued for a large portion of north Texas, in effect until 7am Sunday morning, in anticipation of additional heavy rainfall this morning and early afternoon, and then again during the overnight hours.  Another upper level impulse moving slowly east across northern Mexico will likely have an impact across southwest and south central Texas later today.  This could result in a complex of storms developing across parts of the Hill Country and Southwest Texas later this evening and during the overnight hours.  Severe weather is not expected, but there will be the threat for downburst winds, small hail, very heavy rainfall and localized flash flooding, and frequent lightning.

Here’s a peek at how the radar may shape up today.  This simulated radar graphic takes us out 18 hours to midnight tonight.  As with all these short-term simulated images, keep in mind this is just what the “math” thinks will happen, and reality could be a little different given small-scale developments that can’t be reproduced by the computer models.  In summary, isolated instances of very heavy rain will be possible on and off today.  Not everyone will see rainfall, but those that do could receive 1-2 inches or more in a short amount of time which could lead to flash flooding, especially across urban areas.  We’ll be keeping an eye on things today and provide updates later on this afternoon and overnight!

Simulated Radar through Midnight Tonight