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2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan <br />Volume 2 — Hazard Inventory <br />�C Hazard Assessment: COLD, EXTREME <br />4.3.10.1. Definition <br />The term extreme cold can have varyingdefinitions <br />in hazard identification. Generally, extreme cold <br />events refer to a prolonged period (days) with <br />extremely cold temperatures. An extreme cold event ' �' <br />is when temperatures are dangerously lower than <br />historical averages and pose risk to people, animals, <br />and critical infrastructure (CISA, 2024). The extreme <br />cold definition also depends on the area you live. In <br />southern regions relatively unaccustomed to winter weather, near freezing temperatures could be <br />considered extreme cold. In the North, extreme cold can mean temperatures well below zero. <br />When defining extreme cold one also must mention wind chill. The wind chill temperature is an apparent <br />temperature, or how cold it feels to people outside. Wind chill is based on the rate of heat loss from <br />exposed skin caused by wind and air temperature. As the wind increases, it draws heat from the body, <br />driving down skin temperature and eventually the internal body temperature. <br />Wyk$ YpW <br />4.3.10.2. Range of Magnitude <br />• Lowest Temperature in MN: -60'F (Feb 2, 1996: St. Louis County) <br />• Lowest Temperature in Hennepin County: -41'F (Jan 21, 1888) <br />159 <br />