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Critical Fire Weather Concerns; Storm Tracking Across the Plains

Combination of strong winds, dry conditions and above normal temperatures will result in elevated to critical fire weather concerns for the Southern Plains and portions of Southern California. This is part of a storm system that is tracking across the central Plains with occasional snow showers and heavier snow from the Rockies through the Central/Northern Plains. Read More >

Overview

A complex thunderstorms brought severe weather and beneficial rainfall to portions of the Upper Mississippi River Valley and southwest Wisconsin on the evening on June 17, 2021.

Two supercells in particular produced destructive hailstones up to the size of baseballs along a path from Le Sueur County in south central Minnesota eastward to Wabasha and Winona counties along the Mississippi River.

Rainfall amounts were generally in the 1-3 inch range with a few higher amounts. Due to the very dry conditions present in the area, little in the way of flooding impacts were reported.

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Very large hail in Buffalo City - Photo by Dave Timmons
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Rainfall Map from June 17 Hail reports from the evening storms (view interactive map) Radar imagery shows the two back-to-back supercells 
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