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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Overview

Three days in a row, our area was affected by severe thunderstorms. On June 11, thunderstorms moved into northwestern SD and northeastern WY from MT. They brought large hail and damaging winds; in particular, Philip received significant wind damage, with roofs being blown off buildings. 

On June 12, another round of thunderstorms brought very large hail and strong winds that damaged areas from northeastern WY to central SD. Belle Fourche received quite a bit of damage from Sunday's storms, which involved wind-driven hail, up to grapefruit size (4 inches). Slightly larger (4.5 inches, softball sized) hail was reported near Wall later.

On June 13, storms started across northeastern WY along a cold front, and traveled through western SD during the evening. The largest hail (the size of a grapefruit) was reported in the Hot Springs/Buffalo Gap area. Later, tennis ball sized hail driven by 90 mph winds caused damage in Kadoka. 

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June 11 storm over Bear Butte (Markus Erk)

 

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