Watch as South Dakota storm chasers capture 70 mph winds and lightning as severe storms cross northern plains

Sioux Falls photographer Justin Frantzen chased a storm front across South Dakota as it caused 70 mph wind gusts, torrential rainfall and frequent lightning. The temperature dropped from the upper 80's by nearly 30 degrees

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By: NewsFlare (94368.00)

Tags: regional news, nature, storm, high speed winds,

Location: Dakota