Keep in mind that the risk of frostbite increases rapidly when wind chill values go below -27C. However if you climb 600m (1000ft) in exactly the same conditions it will 'feel like' -16C. So looking at the chart below, walking at 3mph/5kph at sea level in ambient temperature of 0C with a Strong Breeze of 30mph it will 'feel like' -8C. For every 300m (1000ft) height gained, air temperature will drop between 1C and 3C.
#Wind chill calculator skin#
The basic principle of the calculation is based on exposed skin 5 foot off the ground at sea level. The additional parameters which can effect the reality of the feeling, will be altitude, wind speed, humidity, metabolism, type of clothing and speed of movement. The calculation is based upon an average clothed person walking at 3mph/5kph and relates to the skin temperature of their exposed bare face. When the BBC weather forecast states 'today the forecast is a temperature for your area will be 0C, but it will feel like -6C, the 'feels like' is refering to the wind chill factor. So we have done it all for you and arranged the data in an easy to follow guide below to make things easier for us all to remember. Add to this natures variation that temperature drops the higher we climb and all of a sudden this 'Wind Chill' can be a serious issue to effect your enjoyment if you are not prepared for it.Ĭan it be calculated? The answer is yes, however a the maths is quite complicated. Obviously logic tells us the colder the ambient temperature and the quicker the air flow, the more 'chilled' we will feel. One of these is called 'Convection' and this is where cold air passes over the skin removing the warm air and making the skin colder as a result. Debris may be hurled about.If you refer to our 'Heat Loss' information page you will be aware of the 6 ways we all lose heat when out on the hills.
#Wind chill calculator windows#
Sea completely white with driving spray visibility very seriously affected.Ĭonsiderable and widespread damage to vegetation, a few windows broken, structural damage to mobile homes and poorly constructed sheds and barns. More damage to most roofing surfaces, asphalt tiles that have curled up and/or fractured due to age may break away completely. Wind Chill is the term used to describe the rate of heat loss on the human body resulting from the combined effect of low temperature and wind. Everywhere the edges of the wave crests are blown into froth. The sea is completely covered with long white patches of foam flying along the direction of the wind. Trees are broken off or uprooted, saplings bent and deformed, poorly attached asphalt shingles and shingles in poor condition peel off roofs.Įxceptionally high waves (small and medium-size ships might disappear behind the waves). The 'tumbling' of the sea becomes heavy and shock-like. On the whole the surface of the sea takes on a white appearance. The resulting foam, in great patches, is blown in dense white streaks along the direction of the wind. Very high waves with long over-hanging crests. Construction/temporary signs and barricades blow over. Larger branches break off trees, and some small trees blow over. Crests of waves begin to topple, tumble and roll over. Dense streaks of foam along the direction of the wind. The foam is blown in well-marked streaks along the direction of the wind. Moderately high waves of greater length edges of crests begin to break into spindrift. Swaying of skyscrapers may be felt, especially by people on upper floors. Sea heaps up and white foam from breaking waves begins to be blown in streaks along the direction of the wind. Heat Index Calculator - Computes the heat index based on temperature and relative humidity using a formula developed by the. Large waves begin to form the white foam crests are more extensive everywhere. Chance of some spray.īranches of a moderate size move. Moderate waves, taking a more pronounced long form many white horses are formed. Small waves, becoming larger fairly frequent white horses.ĭust and loose paper raised. Leaves and smaller twigs in constant motion. Crests have a glassy appearance and do not break. Small wavelets, still short, but more pronounced. Ripples with the appearance of scales are formed, but without foam crests
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