A severe thunderstorm watch is in effect for far north counties, including Grayson, Denton, Wise, Jack, Cooke and Collin, until 4 p.m. Large hail and damaging winds are the primary threat.Thursday is a First Alert Weather Day for the potential of strong to severe storms in the afternoon and evening hours.

North Texas will experience mostly dry weather through the weekend, but conditions will change Sunday night into Memorial Day as a frontal system moves in, bringing a risk of severe storms.

Over the last 30+ years, tornadoes have touched down the most in our region between 4 p.m. and 9 p.m., according to data from the National Oceanic and Atmospheric Administration. Tornadoes are much more uncommon, but not impossible, in the early morning hours.