Thunderstorm Wind in Billings County, North Dakota

Thunderstorms developed as surface low pressure deepened over eastern Montana and a warm front lifted through North Dakota. The main threat from the storms was damaging winds, with the strongest winds of 90 mph occurring in Stark County. Buildings, trees, and crops were damaged. Two tornadoes were reported, with one near Trotters in Golden Valley County and the other near South Heart in Stark County. Both tornadoes occurred in open fields with no damage to evaluate, and so were rated EFU (Unknown) by National Weather Service policy. Although damaging winds were the main threat, some large hail did occur. The largest hail was the size of ping pong balls, and fell in Stark County.