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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Overview

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.

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Radar Loop 

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Monday's Weather Story

GOES-16 Visible Satellite Imagery at 11 am 

 

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