Hail in Dunn County, North Dakota

There was very significant damage to buildings and automobiles including at a car dealership.

Strong shear with moderate instability developed over the region through the day of September 3. A surface low was over the western Dakotas ahead of an approaching cold front. A warm front was located near the North and South Dakota border in the afternoon. Severe storms developed over western North Dakota in the late afternoon as the cold front approached, and progressed east into the evening. The storms moved into central North Dakota late in the evening into the early morning of September 4.