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.

Severe storms may be back for North Texas on Thursday. As a new air mass moves into the region, storms could develop in the afternoon and evening. The afternoon chance of precipitation, most present for counties north of Interstate 20,