Extreme Cold/Wind Chill — Mason, Illinois

2021-02-14 to 2021-02-15 · Mason, Illinois

Event narrative

Dangerously cold wind-chill readings of 25 below to 30 below zero were observed across Mason County.

Wider weather episode

Strong Canadian high pressure settling southward into the Plains brought an extremely cold airmass into central Illinois from February 13th through February 15th. High temperatures only reached the single digits above zero, while overnight lows dropped below zero. Due to gusty north-northwest winds, wind-chill values plunged to dangerous values as low as 25 below to 30 below zero at times. Despite the bitter conditions, no cold weather deaths were reported.

Source: NOAA Storm Events Database, event_id 945034. Narrative written by the NWS forecast office that issued the report.