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Thread: Coldest and hottest day of the year where you live

  1. #21
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    jes'fuchinwitcha's Avatar Senior Member
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    Quote Originally Posted by OLD GUY IN FLORIDA View Post
    Heat index is meaningless. 95 degrees is 95 degrees. Its like Wind Chill Factor. Water does not freeze because the wind chill is below 32 degrees. Temperatures here in Florida during the height of the summer are 95/95. 95 degrees, 95% humidity. According to the chart from the National Weather Service that means the Heat Index is about 125 degrees. Even the weather reports on TV don't make that claim.

    When I was a kid 95 degrees was 95 degrees, 40 degrees was 40 degrees. Using the so called "Heat Index" is just another way to claim "Climate Change" and is pure BS
    You funny! The heat index couples relative humidity and temperature. Do you know the physics of how swamp coolers work? They work in much the same way as human bodies.

    When water changes phase from liquid to vapor, it absorbs 540 calories per gram of heat energy. That is also called evaporation, and it has a cooling effect. When the relative humidity is high, water (your sweat) won't evaporate, and you get no loss of 540 calories per gram of effect from evaporating sweat. Your swamp cooler won't work, either.

    Heat index.

    Simple...

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    OLD GUY IN FLORIDA's Avatar Senior Member
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    Heat index does not make it hotter, nor does wind chill make it colder. They are meaningless metrics and are only meant to convey what the temperature, hot or cold, feels like, not what it can or cannot do.

    The heat index is a meaningless phrase created by incompetent weathermen to further push "global climate change"
    Devotion to the truth is the hallmark of morality; there is no greater, nobler, more heroic form of devotion than the act of a man who assumes the responsibility of thinking.”
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    Mister D's Avatar Senior Member
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    Quote Originally Posted by OLD GUY IN FLORIDA View Post
    Heat index does not make it hotter, nor does wind chill make it colder. They are meaningless metrics and are only meant to convey what the temperature, hot or cold, feels like, not what it can or cannot do.

    The heat index is a meaningless phrase created by incompetent weathermen to further push "global climate change"
    As a runner, 85 with low humidity and 85 with high humidity are two very different things.
    Whoever criticizes capitalism, while approving immigration, whose working class is its first victim, had better shut up. Whoever criticizes immigration, while remaining silent about capitalism, should do the same.


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    Quote Originally Posted by OLD GUY IN FLORIDA View Post
    Heat index does not make it hotter, nor does wind chill make it colder. They are meaningless metrics and are only meant to convey what the temperature, hot or cold, feels like, not what it can or cannot do.

    The heat index is a meaningless phrase created by incompetent weathermen to further push "global climate change"
    You are mistaken. Both relative humidity and air movement are factors affecting the ability of heat generating bodies (such as humans or car engines) to retain, or shed, heat. One physical characteristic is that sweat (water) is a phase change substance that absorbs or releases large amounts of heat energy when it changes between liquid and gas phases. It absorbs 540 calories per gram when it evaporates, that’s why we get wet to cool off. It’s also how evaporative coolers work. When the relative humidity of air is high it has a reduced ability to take on more water vapor, causing evaporation to slow down. At 100% RH, no water will evaporate and no phase change cooling will occur.

    A second effect is that water holds more heat than air, and transfers heat to and from objects more efficiently. So high RH plus high temperature means that the air feels warmer, and will actually warm our bodies faster than dry air when it is above our body temperature.

    Another is that in still air, a blanket of air warmed by our bodies lies close to the skin, working as insulation. When there’s air movement, that blanket is blown away, causing an effect known as “wind chill”. Bodies do cool off faster in wind, though the lowest temperature reached in cooling off will be the same as the air temperature - which is no consolation if you are frostbitten, or dead.

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    Quote Originally Posted by Mister D View Post
    As a runner, 85 with low humidity and 85 with high humidity are two very different things.
    Or an infantry soldier in the field.
    ΜOΛΩΝ ΛΑΒΕ


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    I'm pretty a hardy fellow. I've worked out in the elements all of my working life. I pretty much ignore the cold and I dress for it. High humidity coupled with high temps is a different story..... you can't work naked.

    Montani Semper Liberi


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    This year our hottest day was 95 and the coldest was 24. Generally every summer we get a few days just over 100. Not this year.
    When the people find that they can vote themselves money, that will herald the end of the republic.“ - Benjamin Franklin.


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    Quote Originally Posted by OLD GUY IN FLORIDA View Post
    Heat index does not make it hotter, nor does wind chill make it colder…
    It makes the effects of the heat or cold more severe.
    When the people find that they can vote themselves money, that will herald the end of the republic.“ - Benjamin Franklin.


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    Quote Originally Posted by OLD GUY IN FLORIDA View Post
    Heat index is meaningless. 95 degrees is 95 degrees. Its like Wind Chill Factor. Water does not freeze because the wind chill is below 32 degrees. Temperatures here in Florida during the height of the summer are 95/95. 95 degrees, 95% humidity. According to the chart from the National Weather Service that means the Heat Index is about 125 degrees. Even the weather reports on TV don't make that claim.

    When I was a kid 95 degrees was 95 degrees, 40 degrees was 40 degrees. Using the so called "Heat Index" is just another way to claim "Climate Change" and is pure BS
    95 degrees in Barstow California with extremely low humidity feels much different than 95 degrees in Columbus Georgia with 100% humidity. The same thing is true in cold weather.
    When the people find that they can vote themselves money, that will herald the end of the republic.“ - Benjamin Franklin.


    “When people get used to preferential treatment equal treatment seems like discrimination.” - Thomas Sowell

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    Recently we hit 98 for a couple of days. The "media" claimed it was unprecedented, which was a lie.
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