Posted on 07/21/2011 11:24:36 AM PDT by theruleshavechanged
90F will feel like 90F at 30% humidity level.
http://www.erh.noaa.gov/er/iln/tables.htm
You are welcome.
The other issue is that this current weather pattern is a little unusual in that the high pressure system responsible is usually situated over the 4 corners (4-corner high), however the large deep troughs off of the west coast have moved and locked the high pressure more over the central U.S. Once the troughs move through, the high will migrate west and allow for cooling in the central and eastern states.
Why don’t they apply a wind chill in the summer? Sometimes there is a breeze, but the heat index doesn’t consider it. It is all just sensationalism.
What a brilliant idea why didn't I think of that.
I'll bring the tractor inside and mow my living room.
They do the same thing with wind chill. It’s part of the media’s “we need to scare the crap out of you so you’ll pay attention to us” campaign.
I realize that's the way the formula is set up.
It's just that the heat index is referencing something that doesn't exist, "a temperature" without a corresponding humidity level.
If you wish to say 85/60 feels like 90/30, I have no problem with that. But 85/60 doesn't feel like 90, it feels like 90/30.
Possibly I'm being over-precise, but they're taking a composite measure, temp/humidity, and expressing it as a single temp value. That's just wrong.
I’m with Rush on this, but I am a simple man that uses his senses.
I’d be just fine with a thermometer that reads: “Too damn hot”, “just about right” and “too damn cold”.
Heck, I am still trying to figure out why we put sour cream in the refrigerator... to keep it from what?
Shouldn’t a hysterectomy be called a hers-terectomy?
I honestly didn’t need a warning sticker on my microwave that says it should never be used for drying my hair.
Life doesn’t really need to be that complicated.
This morning it was still in the 80s and we had a heavy, pea-soup fog.
No, this is not normal stuff ~ and there's nothing artificial about it.
The heat index is useful here if not where you are. We are not misled by the artificially low "ordinary temperature". We all understand the heat index combines relative humidity with heat to give us the information we really need to protect ourselves.
I feel hotter than the temperature would indicate, and it is plenty hot. I’m going to drive to town in my diesel truck, air conditioner blowing, until my arthritis makes me “feel like” it is too cold.
Is that 116 with 100% humidity or 0% humidity?
“Stock the fridge. I’m on my way!!”
Come on UP, FRiend!!
Be careful to mind the speed limits, because the armed tax collectors will relieve you of your discretionary income.
Bring some of that heat with you!!
My you would like they expressed it as levels of oppressiveness.
Here today the heat is oppressive. And I am not just saying that because I live in AC.
I am actually a professional pet-sitter and dog walker. I am acclimatized to the heat by this time of the year, but my first thought this morning at 4am and 84F with 70% humidity was...oppressive. The chart calls it feeling like 90F...ah...no. This feels worse and is actually worse for you health-wise.
This situation actually makes your body work harder. Your heart will beat 15 beats more per minute in an effort to cool you. If you work outside like I do most days...even days like today are just plain nuts.
I actually issue my clients Dog Day Advisories via email. That way they know their dogs walks and outdoor play sessions are cut short. Potty breaks and then indoor work time & training instead. So far all of my clients have left a soda or gatoraid in the fridge for me. LOL
Wind chill, unlike heat index, has a basis in physical reality.
All it is is the rate of heat loss at a given temp/wind speed that equates to the rate of heat loss at a given temperature with no wind.
Very simple and elegant.
Note the temperature will never drop below the “actual” temperature. All that changes is how fast you get there.
130 or above heat stroke highly likely with continued exposure
105 to 130 heat stroke likely with prolonged exposure
90 to 105 heat stroke possible with prolonged exposure
I’ll be in Oak Harbor next weekend for my 40 year high-school reunion. Flying up from TX.
Bull. Strong wind will pull heat away from a parka far faster than a still day.
And the same people are setting up global cooling stories in the wintertime when they report the wind chill index -- right, Rush?
What a windbag.
Both wind chill and relative humidity result in physical stress on the body...both are very real even if you don’t understand the science of it or science fails to explain it plain enough.
Your body will physically react to and at the heat index numbers.
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