Nebraska Hotting Up

Discussion in 'Weather & Natural Disasters' started by Hedi Mitchell, Jul 19, 2019.

  1. Hedi Mitchell

    Hedi Mitchell Supreme Member
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    #1
    Last edited by a moderator: Mar 29, 2020
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  2. Bess Barber

    Bess Barber Veteran Member
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    I had no idea Nebraska even got that hot....ever. Probably lots of homes that far north don't even have air conditioning.
     
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  3. Beth Gallagher

    Beth Gallagher Supreme Member
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    And then, in Indiana...

    An Indiana mother has been arrested after she allegedly left her toddler in a hot car while she attended a Department of Child Services interview with her newborn.

    Jennifer K. Ost, 27, was arrested and charged with neglect of a dependent, a level 6 felony.

    According to Fox 59, Ost was scheduled for an appointment with DCS on Tuesday afternoon. According to the police report first obtained by the news channel, Ost had given birth to a son four days earlier. After she signed him out of the hospital against medical advice, she agreed to allow a DCS pediatrician to examine the newborn.

    When she arrived at the appointment, police say that she left her older child, a toddler, inside the hot car.
    _______________________________________________

    Is it time for the Darwin Awards nominees already??
     
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  4. Ken Anderson

    Ken Anderson Senior Staff
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    Saturday is going to be bad.

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  5. Hedi Mitchell

    Hedi Mitchell Supreme Member
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    @Ken Anderson ...Bad...you call that bad weather Ken.... maybe for your area. :)
     
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  6. Holly Saunders

    Holly Saunders Supreme Member
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    We're forecast to be around the 90 mark here after the weekend... no AC in 99 % of the houses here... . My ceiling fans, and 2 standalone fans are doing a fair job but not enough, so I've ordered another oscillating tower fan with a timer and remote control, should be arriving tomorrow.. (Saturday)
     
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  7. Frank Sanoica

    Frank Sanoica Supreme Member
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    This morning, the Weather Channel, showing Heat Indexes for the entire country, highlighted Chicago, 117 degrees! Along the East Coast, 115 degrees. Rarely is the heat index much higher than 5 degrees above the actual temperature, so, 110 in Chicago? Impossible!

    Growing up there, and as an adult, I recall one particularly sweltering 4th. of July when it hit 101 degrees. We spent most of the day in the basement, coolest part of the house, no A/C. I emailed my friend Charlie in Chicago this morning; he had mentioned this summer is the first one during which both he and Sandy are feeling overcome by the heat.

    Curiously, here in the Desert, the Heat Index often goes the other way, due to the lack of humidity: for example, temperature 100 degrees, heat index 92.

    Frank
     
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  8. Nancy Hart

    Nancy Hart Veteran Member
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    I've noticed that even here in the tropics of Georgia. Often when the temp goes above 100 it's not as unpleasant as mid 90's because the humidity is lower. I guess that would be a given, wouldn't it?
     
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  9. Mary Robi

    Mary Robi Veteran Member
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    My grandma and I tried every summer to fry an egg on the sidewalk. We could usually get the eggwhite to turn....well….white, but never got the yolk to cook hard. Then we had to clean up the mess. We never gave up hope, though.
     
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  10. Nancy Hart

    Nancy Hart Veteran Member
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    I think I would love your grandmother, Mary. She sounds so cool. :cool:
     
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  11. Frank Sanoica

    Frank Sanoica Supreme Member
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    @Nancy Hart
    Yes. The Physics of it all is that the human body must maintain it's temperature no higher than 99 degrees. When the air surrounding the person is, say, 60 degrees, that's no problem, because "heat" always moves from the hotter to the cooler place; IOW, the body gets cooled so it's internal "burning" process causes no rise in temp. above 99.

    The body cools itself by sweating, the sweat evaporating, which takes away heat. As the humidity level in the surrounding air increases, the evaporative cooling effect lessens, thus requiring more sweating than when the humidity is low. In the humid Midwest and South, the clothing gets soaked, the sweat failing to evaporate as fast as it's coming through the pores. This is the "sticky" feeling which is so uncomfortable.

    When the surrounding temperature is much above 99, the body experiences two things heating it up: it's own physiological processes, AND the fact that heat is moving out of the air and into the body, a double whammy. Then, maintaining the body at proper temp. becomes more difficult. That's when trouble can start.

    As you say, usually as temperatures go up, the humidity tends to be lower, but not always. Here in the Desert the sweat evaporates instantly as fast as it leaves the pores, since there is very little water in the air, the air is hot, and evaporative cooling of the body is more efficient than when relative humidity is high. Rarely is the clothing ever wet from sweating, even when it's 115 degrees. Humidity here is often near zero %, with an average of maybe 10 to 20%, except in summer!

    "Dewpoint" is another gauge of all this meteorological BS. Dewpoint is a TEMPERATURE, having nothing directly to do with relative humidity, which is measured in %. The Dewpoint temperature is that temperature above which the air can contain no additional water vapor. In your neck of the woods, if you take a cold can of beverage out of the fridge at, say, 40 degrees and set it on the table, your room temperature being well above 40 degrees, soon a puddle of condensed water out of the air will collect as the can's surface "sweats" water out of the air. Here, our humidity is about 15% today, and my can of soda remains dry (outside, and soon, inside!).

    Frank
     
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  12. Mary Robi

    Mary Robi Veteran Member
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    She was. She really was. She was up for any adventure, loved traveling and actually went on rollercoasters with me in her 60s (that's where I get my love for thrills). She and my daughter had a lot of fun, too.
     
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  13. Don Alaska

    Don Alaska Supreme Member
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    @Frank Sanoica the relative humidity is calculated from the dewpoint and ambient temperature so it is related. When i was in Arizona, I always found respite simply by staying in the shade. In south Georgia, the shade was almost as hot as the sunshine due to the high humidity.
     
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  14. Frank Sanoica

    Frank Sanoica Supreme Member
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    @Don Alaska
    I hadn't expected to get into the "Psychrometry" thing very extensively, but dewpoint is a concept not often understood by many, even though it is mentioned often by the weathermen (and women!). The method used commonly to determine the dewpoint is this:

    "Devices called hygrometers are used to measure dew point over a wide range of temperatures. These devices consist of a polished metal mirror which is cooled as air is passed over it. The temperature at which dew forms is, by definition, the dew point."

    From: https://en.wikipedia.org/wiki/Dew_point#Measurement


    My earliest exposure to Psychrometry came in sophomore year high school physics, with a Sling Psychrometer.

    Interesting statistics: "A dew point of 35 °C (95 °F) was observed at Dhahran, Saudi Arabia, at 15:00 AST on July 8, 2003, which caused the heat index to reach 81 °C (178 °F), the highest value recorded. The highest dew point observed in the United States was 33 °C (91 °F) at 14:00 EDT on July 12, 1987, in Melbourne, Florida.

    Frank
     
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  15. Hedi Mitchell

    Hedi Mitchell Supreme Member
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    Wow Frank, your just a walking library of info.,very good:p
     
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