What is wind chill advisory?

Answer 1

Wind chill describes the effect of cooling you further by removing the thin, slightly protective,layer of slightly warmer air that would otherwise form around you from your own heat. It does not lower the actual air temperature.

A 'wind chill advisory' issued by the National Weather Service means wind chills near or below -25F though the actual temperatures may be significantly higher. ++ Thank you Richard for that additional information. It was new to me as I live in the UK where, apart from in the Scottish Highlands and some parts of Northern England,the climate is generally milder thanin many areasof the American continent. That means wind-chill is notusually a formal part of the UK weather forecasts beyond advice like "... minus 3 degrees but wind-chill will make it feel much colder". (degreesCelsius).

Answer 2

A wind chill advisory is issued by meteorological services to warn people of the combined effect of wind and cold temperatures on the human body. It indicates that conditions may cause frostbite and hypothermia if precautions are not taken. People are advised to dress warmly and limit their time outdoors during a wind chill advisory.