Cold/Wind Chill in Hermosa Foothills, South Dakota

Cold/Wind Chill February 14, 2021 – February 15, 2021 · Hermosa Foothills, South Dakota

The wider storm

An Arctic air mass settled over the Northern Plains for a prolonged period, producing bitterly cold temperatures and extremely low wind chills. Low temperatures were well below zero across the area, with wind chills as low as 35 below to 50 below zero.

Source: NOAA Storm Events Database, event 939230. Narratives are written by the National Weather Service forecast office that issued the report.

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