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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

 

Fast Facts:

  • Severe storms brought areas of wind damage to northern IL and northwest IN during the later afternoon through evening on Friday, June 26.
  • Damage was mainly done to trees, but some of these trees did fall on structures.
  • The atmosphere was ripe for severe storm clusters to develop that were capable of damaging winds, highlighted by strong winds at 10,000-20,000 ft and substantial instability.
  • A Severe Thunderstorm Watch had been issued early in the afternoon and numerous warnings would follow.
  • On Saturday, June 27, additional thunderstorms developed and trained over the same area of eastern Illinois into northwest Indiana, producing 5+ inches of rain in a few hours, bringing two day totals in/near Kentland, IN to 7+ inches, and causing significant flash flooding.

For detailed information about the flash flooding that impacted Kentland, IN, see Rainfall Analysis of the June 27th, 2020, Flash Flood in the Vicinity of Kentland, IN, a NWS Technical Paper.

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