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Heavy Rainfall Across Portions Of Gulf Coast States This Week

Abundant moisture will interact with a stalled front in the Gulf of Mexico this week to generate locally heavy rainfall across the Gulf Coast region. This activity will be bolstered mid-late week by remnants of Willa, currently in the eastern Pacific. This surge of moisture could bring widespread flood concerns to the region given the prolonged period of wet weather. Read More >


On Monday, August 21, 2017, during the solar eclipse, severe thunderstorms impacted the region producing: large hail, damaging winds, and locally heavy rain. Scattered thunderstorms began to develop early in the morning across central South Dakota, then became strong to severe as it approached the Missouri River Valley by mid to late morning. The biggest hail size of 2 inches (egg size) was reported at Olivet, SD in Hutchinson County.


Ahead of this complex, a line of thunderstorms developed from near Parker, SD to Spencer, IA, along the I-90 corridor. These storms produced locally heavy rain, and flash flooding in some areas. The Sioux Falls Metro Area received from 2 to over 6 inches of rain early in the afternoon hours. The highest rainfall report was of 7 inches in southeastern Sioux Falls.

Radar Loop 

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Monday's Weather Story

GOES-16 Visible Satellite Imagery at 11 am 


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