Strong thunderstorms brought hail, wind to North Dakota
Two strong thunderstorms moved across northern North Dakota on Monday night.
FARGO — An area of low pressure was making its way through North Dakota on Monday night, July 18, and in doing so it lifted its warm front northwards into northern North Dakota.
The environment across northern North Dakota was rich with moisture and warm temperatures, allowing for instability.
During the early evening hours, scattered thunderstorms were present across far eastern Montana where they produced hail and strong winds.
By 9:30 p.m. Monday, these thunderstorms began to exit Sheridan County, Montana, and entered into Divide and Williams County in northwestern North Dakota. Two of these storms would go on to produce strong winds and hail across North Dakota.
The first storm that entered this region produced wind gusts upwards of 70 mph. The town of Wildrose received significant damage, with uprooted trees blocking roads and damaging buildings.
The National Weather Service believes this was done by straight-line winds. This storm then moved into Burke County before crossing into extreme southeastern Saskatchewan by 11:30 p.m.
The second strong storm moved into Williams County at about 11:30 p.m., and it brought hail upwards of 1.5 inches and wind gusts of about 60 mph to the Williston area. This storm continued to move east, reaching Ward and Bottineau counties by 2:30 a.m., bringing hail of around 1.0 to 1.3 inches in diameter.
The storm then began a slight turn to the northeast, reaching Rollette and Towner counties by 4 a.m. This storm produced strong winds upwards of 70 mph in the Perth area before moving into Cavalier County where it damaged trees and unleashed winds of 67 mph around Langdon.
Meanwhile, rain showers and thunderstorms developed late in the evening around Jamestown before tracking east into the Fargo region by 1 a.m. Minor tree damage was reported near Galesburg, and 1-inch diameter hail was reported near Grand Forks.