NASCAR has dropped the red flag on Saturday’s Truck Series race at North Wilkesboro Speedway due to lightning in the area. The delay will be at least 30 minutes. Weather has been an issue all day Saturday, and qualifying the Wright Brand 250 was also canceled due to rain. The red flag came after a caution came out due to rain, as well. North Wilkesboro is the site of NASCAR’s All-Star Weekend, marking its second straight year hosting the festivities. Kyle Larson is hoping to defend his crown, but Kevin Harvick is going with one of his Hendrick Motorsports teammates to get it done at North Wilk…