this post was submitted on 12 Aug 2023
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But percentages in the stock market seem to be more important to efficiently combat climate change.

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[–] [email protected] 71 points 1 year ago

Heat index or apparent temperature is not the same as actual temperature. Would still suck but at least you aren't being pasteurized.

[–] [email protected] 40 points 1 year ago (4 children)
[–] [email protected] 43 points 1 year ago* (last edited 1 year ago)

You’re right, context is important here.

The image came from a twitter post. „Heat index“ means basically „Feels like“.

https://www.timeanddate.com/weather/iran/bandar-abbas/historic?hd=20230808

Doesn’t mean it was fucking hot tho.

[–] [email protected] 12 points 1 year ago (1 children)
[–] [email protected] 4 points 1 year ago (3 children)

The heck is “heat index”

[–] [email protected] 17 points 1 year ago (1 children)
[–] [email protected] 12 points 1 year ago (1 children)

Jesus Christ, 158 F heat index is so far out of bounds on that scale it's insane. What's after "Extreme Danger"? "People will die"? "Being outside is suicide"?

[–] [email protected] 15 points 1 year ago* (last edited 1 year ago) (1 children)

A [wet-bulb temperature] reading of 35 °C (95 °F) – equivalent to a heat index of 71 °C (160 °F) – is considered the theoretical human survivability limit for up to six hours of exposure.

[–] [email protected] 17 points 1 year ago

Ah phew. It’s just the absolute limit for human survivability 😮‍💨

[–] [email protected] 0 points 1 year ago

It's when it feels really hot and you look at the thermometer and think, "wow is that it? I better arbitrarily add a few more degrees so people know it's really hot"

[–] [email protected] 28 points 1 year ago (2 children)

Down voted. Please repost with a link to the source. We're better than this.

[–] [email protected] 8 points 1 year ago* (last edited 1 year ago) (2 children)
[–] [email protected] 13 points 1 year ago (1 children)

A heat index is not an actual temperature reading. This is disingenuous and people whom don't want to believe in things like climate change will latch on to and discredit people for things like this.

[–] [email protected] -1 points 1 year ago (1 children)

People who.

But the point is we'll taken. It seems like a really misleading headline. That doesn't help things at all.

[–] [email protected] 2 points 1 year ago (1 children)

If you're gonna correct someone else's grammar, you better make sure your own grammar is squeaky clean first, lol.

[–] [email protected] -1 points 1 year ago

And I can't fix it for some reason

[–] [email protected] 2 points 1 year ago

Thanks, but the point is it needs to be the main link in the posting

[–] [email protected] 3 points 1 year ago (1 children)

Would like to see the option to add "Misleading Title" to articles, similar to what used to exist on "R". Not enough people downvote misleading stuff.

[–] [email protected] 1 points 1 year ago (1 children)

More like "image posted without a link to the source to verify it"

[–] [email protected] 1 points 1 year ago

To me it was disingenuous to claim it was 70°C when it only "felt like" 70°C.

[–] [email protected] 19 points 1 year ago

probably faulty sensor, there's no way the temp is 15 degrees higher than the current highest temperature ever measured

[–] [email protected] 16 points 1 year ago (1 children)

What was the actual temperature? Heat index is something different.

[–] [email protected] 19 points 1 year ago (3 children)

The real temperature are 58ºC, but relevant is the index, that is, how we percive the temperature. With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat, even 50ºC result lethal in a short time, rising corporal temperature over 43ºC. Because of this, it's the index which is the relevant value, not the one shown by the thermometer.

[–] [email protected] 16 points 1 year ago* (last edited 1 year ago) (2 children)

With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat

You got that flipped.

With dry air, your sweat can evaporate. Evaporation consumes energy, and thus has a cooling effect, making high temperatures more bearable/survivable at low humidity.

With humid air (eg in a sauna) your sweat cannot evaporate because the air is already saturated. This deprives you of the cooling effect, making humid conditions feel much hotter; and making it lethal much faster and at lower temps.

[–] [email protected] 12 points 1 year ago (1 children)

I see the confusion. A sauna is not necessarily humid, traditional Finnish sauna are hot but not high humidity. You're thinking of a steam sauna which is high humidity but lower temperature.

https://en.m.wikipedia.org/wiki/Sauna

[–] [email protected] 2 points 1 year ago

Oh, fair enough. I had no clue that there was even such a thing as a steamless sauna.

[–] [email protected] 7 points 1 year ago

Yep.

100f+ degree weather with zero humidity? Sweat evaporates so quickly that with a fan on you or a breeze you can actually feel briefly chilled at times.

[–] [email protected] 9 points 1 year ago* (last edited 1 year ago)

I know. There's also this:

https://en.wikipedia.org/wiki/Wet-bulb_temperature

But mentioning the actual temperature is less misleading.

With a dry air you can support more than 70º (eg in a Sauna), but with high air humidity, which evite the evaporation cooling by your sweat, even 50ºC result lethal in a short time,

Over 90C dry, 50C wet, 10-15 minutes. Longer/hotter if you take dips in cold water to cool down or if you're Finnish. They sometimes go over 100C, they're used to it.

[–] [email protected] 1 points 1 year ago

Is hot but Washington Post article says the temperature in recent weeks has got as high as 51C and all time max is 54C. Where are you getting 58C from?

[–] [email protected] 14 points 1 year ago (1 children)

It would be amazing if some how the heat would cut off access to the persian gulf, it would definitely push the world to think of alternative energy

[–] [email protected] 7 points 1 year ago (1 children)

As if, they'd look for alternative routes

[–] [email protected] 2 points 1 year ago

Choking off that straight would absolutely grind to a halt the economic engines of every asian major power faster than they could find a solution to exporting the hundreds of millions barrels a day though that hostile environment.

[–] [email protected] 11 points 1 year ago

Dew points of 90-95F? JFC that’s nuts.

[–] [email protected] 7 points 1 year ago

The title is a little clickbait-y: Heat Index is different from Temperature and not everyone knows that.
While it's still bad, it sensationalizes the matter and this can be used against you from people that have a different opinion on the subject.

[–] [email protected] 1 points 1 year ago

You are right. That was pretty bad.