Cold/Wind Chill — Hermosa Foothills, South Dakota

2021-02-14 to 2021-02-15 · Hermosa Foothills, South Dakota

Wider weather episode

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_id 939230. Narrative written by the NWS forecast office that issued the report.