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Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

Flash flooding likely in northeast Kansas & Missouri into tonight. Widespread extreme heat will develop and persist across much of the Southeast this weekend & next week. Tropical Storm Krosa has formed and will continue to cause heavy rain across Guam & the CNMI through Saturday. Severe storms with flooding rains expected into tonight for portions of the Midwest. Read More >

Overview

On Thursday, June 10, 2021, much of western and central North Dakota was under a Moderate Risk for severe weather. Initial storms moved into west central North Dakota in the late afternoon and produced multiple tornadoes southwest of Alexander. There were numerous reports of large hail up to the size of golf balls as storms expanded into northwest North Dakota in the evening. An especially strong thunderstorm moved through Williston around 9:30 PM, with hail of 2 inches in diameter. Heavy rainfall from a few rounds of storms produced flash flooding in Williston, with multiple cars submerged on Highway 2. Many locations in northwest North Dakota received heavy rainfall, with widespread amounts of 3 to 5 inches of rain in parts of Williams, Divide, and Burke Counties.

As storms moved east from Montana and northeast from South Dakota, they eventually became more linear as they moved into central North Dakota, where damaging winds were the main hazard. Widespread severe gusts were reported across the south central, with a peak gust of 79 mph at Long Lake. There were many reports from across the area of damage to trees and structures, especially from the Hebron and Glen Ullin areas. 

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Tornado near Sather Dam, ND, around 8:30 PM on June 10, 2021. Photo courtesy of Andrew Colantoni.
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