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Excessive Rainfall in the Southern Plains; Extreme Heat Coming to the Southwest U.S.

Heavy to severe thunderstorms may bring areas of excessive rainfall and flooding over parts of the southern Plains through Friday. A Slight Risk of excessive rainfall has been issued. Dangerously hot temperatures are forecast across parts of southern Arizona and far southeastern California Saturday through Monday. An Extreme Heat Watch has been issued. Read More >

Overview

A QLCS-like line of storms quickly developed ahead of a blob of decaying convection that was moving northeast in southern MN. These new storms formed within a narrow corridor of uncapped, moderate MLCAPE with very high MLCAPE values in the lowest 3 km. While bulk shear magnitudes were borderline, the 0-3 km shear was normal to the line of storms, signaling some possibility of QLCS tornadoes. As the line of storms traveled through the Twin Cities, 5 EF0 tornadoes were confirmed in the southeast metro. Numerous trees were uprooted or broken and a few structures were damaged. Strong winds also caused damage and a 61 mph wind gust was measured at the grandstand of the Minnesota State Fair.

 

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