National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Overview

Thunderstorms developed during the afternoon of May 18, 2026 and quickly became severe across north central Kansas. Initial supercells produced hail up to half-dollar size and five tornadoes: two rated EF-1 and three rated EF-Unknown. Supercells congealed into a line as they moved southeast across northeast Kansas, producing wind gusts of 60-85 MPH. In addition, two EF-1 tornadoes spun up along the leading edge of the line of storms, making for a total of seven tornadoes on this day.

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Supercell near Morganville, KS (Photo by Daniel Reese)
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