"Icy Hell" - New Hampshire Can Reach -100°F tonight via Wind Chill.
108 replies, posted
[QUOTE=TheBorealis;53029107]Easy F/C conversion.
For F to C, take 32 from the F and multiply by 5/9
For C to F, multiply by 9/5 and add 32 to the result[/QUOTE]
Even easier (rough)
F = 2C + 30
C = (1/2)F - 15
[QUOTE=The golden;53029146]Wind chill measurements are bogus bullshit unfortunately but that's still pretty damn cold.[/QUOTE]
So then you’ve never actually gone outside when it’s cold.
I thought this wasnt factoring in wind chill.
Still, -44C is pretty goddamn cold.
[QUOTE=mugofdoom;53029239]How do you measure something like that, though? Do we have a definitive source on what subjective temperatures feel like with and without wind or do meteorologists just send Ted the Intern into meat lockers and ask him what certain temperatures feel like?
I'm legitimately curious.[/QUOTE]
The early models just compared how long it takes a consistent container of water to freeze at various temperature/windspeed values. The current system is based on studies of human skin temperature dissipation and basic heat physics - they were focused on the "has the same frostbite risk" part, not the "subjectively feels like" part, but the latter tracks the former quite well. This is, however, why wind chill shouldn't be used for temperatures above 10C.
Isn't that literally the Artic temperature?
You guys might need a scarf...
[QUOTE=gman003-main;53029257]The early models just compared how long it takes a consistent container of water to freeze at various temperature/windspeed values. The current system is based on studies of human skin temperature dissipation and basic heat physics - they were focused on the "has the same frostbite risk" part, not the "subjectively feels like" part, but the latter tracks the former quite well. This is, however, why wind chill shouldn't be used for temperatures above 10C.[/QUOTE]
Thanks, that's really interesting. I've always wondered how that was measured, and honestly I always assumed it was just something that didn't have an actual scientific basis and was just used by TV weathermen for the "wow" factor, just from the way it sounds.
"It may be -10F but with wind chill it's actually warmer in Antarctica right now. Better bundle up!"
[QUOTE=Zillamaster55;53029253]So then you’ve never actually gone outside when it’s cold.[/QUOTE]
To be fair, they said the measurements are bogus, not that wind doesn't make cold temperatures feel colder.
on top of that, any poor fucker living on the coast in NH is currently also most likely experiencing a little something like this outside their front door thanks to the historic high tide marker
[img]https://i.imgur.com/Pe0aBjR.jpg[/img]
that's about a foot of pure icy hell if i've ever seen one. that colored post sticking out of the ground is a flag on a fire hydrant, for reference
I want to try camping in it, with the proper gear of course. just to say that I did it. my jetboil has saved my life on cold nights in the wilderness
[QUOTE=FFStudios;53029272]on top of that, any poor fucker living on the coast in NH is currently also most likely experiencing a little something like this outside their front door thanks to the historic high tide marker
[img]https://i.imgur.com/Pe0aBjR.jpg[/img]
that's about a foot of pure icy hell if i've ever seen one. that colored post sticking out of the ground is a flag on a fire hydrant, for reference[/QUOTE]
Oh my fucking god that looks horrifying. I can just barely imagine how fucking painful it would be to accidentally step in that. Man, I feel for anyone who has to endure that mess.
It is strangely beautiful, though.
[QUOTE=Socram;53029177]Have you really never heard of wind chill before?[/QUOTE]
Of course I have, I live right below the fucking polar circle (though we never heard it stated as a temperature - apparently that's a US thing), but the article blows it up like it would "feel" like -100°F air. That's certainly not the case, and it's important to note that the number is physically meaningless.
[QUOTE=FFStudios;53029272]on top of that, any poor fucker living on the coast in NH is currently also most likely experiencing a little something like this outside their front door thanks to the historic high tide marker
[img]https://i.imgur.com/Pe0aBjR.jpg[/img]
that's about a foot of pure icy hell if i've ever seen one. that colored post sticking out of the ground is a flag on a fire hydrant, for reference[/QUOTE]
Jesus, that actually looks like the outside in Metro games minus the sci-fi destruction.
[QUOTE=FFStudios;53029272]on top of that, any poor fucker living on the coast in NH is currently also most likely experiencing a little something like this outside their front door thanks to the historic high tide marker
[img]https://i.imgur.com/Pe0aBjR.jpg[/img]
that's about a foot of pure icy hell if i've ever seen one. that colored post sticking out of the ground is a flag on a fire hydrant, for reference[/QUOTE]
my nipples are rock hard looking at this...
That's awful, I was in 15F once in my sweats for less than a minute to grab some firewood and when I came back inside to the warmth, my muscles were still feeling the cold.
[QUOTE=Pen Straw;53029307]my nipples are rock hard looking at this...[/QUOTE]
nipples hard enough to cut glass as my grandfather used to say
[QUOTE=The golden;53029146]Wind chill measurements are bogus bullshit unfortunately but that's still pretty damn cold.[/QUOTE]
Did you know that not only does your body heat up the air around you, but when subjected to a phenomena known as "wind," said air has actually been observed to "move?"
and yet, we press on.
Man is a notoriously stubborn motherfucker, we'll power through this.
[QUOTE=Mingebox;53029378]Did you know that not only does your body heat up the air around you, but when subjected to a phenomena known as "wind," said air has actually been observed to "move?"[/QUOTE]
It doesn't magically make the air colder though, and there's no reasonable way to give an equivalent temperature at zero wind - it's heavily dependent on things like what clothes you're wearing, how you wear them, body temperature, body heat, breathing rate, etc. You can adjust all of those to suit the weather.
For example: at -10°C/14°F you could wear a wind jacket just fine regardless of wind speed, but a hoodie would get pretty cold if it was blowing. Not the best example at the temperatures involved here, but you get the idea. Wind also doesn't affect the air in your lungs which is a big source of heat loss, not to mention breathing starts to become tricky once you go below -30C or so. Unless you work in public safety or something, the apparent temperature alone won't tell you jack shit.
[QUOTE=Tobba;53029488]It doesn't magically make the air colder though, and there's no reasonable way to give an equivalent temperature at zero wind - it's heavily dependent on things like what clothes you're wearing, how you wear them, body temperature, body heat, breathing rate, etc. You can adjust all of those to suit the weather.[/QUOTE]
Thermodynamics. Stuff doesn't feel cold because of an absolute temperature difference, it feels cold because heat is flowing away. When something changes the rate heat flows away - like wind or humidity - it feels colder. And from some perspectives, it may as well be colder - frostbite cares about how much heat you retain, not what the air temperature is.
[QUOTE=Tobba;53029488]For example: at -10°C/14°F you could wear a wind jacket just fine regardless of wind speed, but a hoodie would get pretty cold if it was blowing. Not the best example at the temperatures involved here, but you get the idea. Wind also doesn't affect the air in your lungs which is a big source of heat loss, not to mention breathing starts to become tricky once you go below -30C or so.[/QUOTE]
That argument can be extended to argue that temperature doesn't make sense, because you can just put on a jacket to stay warmer.
[QUOTE=ridinmybike;53029228][IMG]https://ibb.co/ht7dbb[/IMG][IMG]https://ibb.co/ht7dbb[/IMG][IMG]https://ibb.co/ht7dbb[/IMG]
[IMG]https://ibb.co/ht7dbb[/IMG]why wont my image show?[/QUOTE]
You pasted the page URL instead of the image URL.
[QUOTE][IMG]https://image.ibb.co/kisphG/trump.png[/IMG][/QUOTE]
[editline]edit[/editline]
That said, you can embed tweets directly with [noparse][media][/noparse] tags: [At this point I would normally embed the tweet, but it's most likely fake. I should have noticed from the (lack of) capitalisation [editline]edit[/editline]and old avatar shape, though there's other explanations for that part.]
[QUOTE=gman003-main;53029493]Thermodynamics. Stuff doesn't feel cold because of an absolute temperature difference, it feels cold because heat is flowing away. When something changes the rate heat flows away - like wind or humidity - it feels colder. And from some perspectives, it may as well be colder - frostbite cares about how much heat you retain, not what the air temperature is.
That argument can be extended to argue that temperature doesn't make sense, because you can just put on a jacket to stay warmer.[/QUOTE]
My point is that it's a question of heat transfer, extremely complicated heat transfer. That has relatively little to do with thermodynamics, and the temperature they assign doesn't even make sense therrmodynamically.
[QUOTE=gman003-main;53029493]Stuff doesn't feel cold because of an absolute temperature difference, it feels cold because heat is flowing away.[/QUOTE]
Which doesn't take into account surface area, or insulation, or air pressure, or any of the other factors that directly impact how cold it subjectively feels. With decently insulating clothing, wind chill has next to no impact.
Tobba is entirely correct. Temperature is an objective measurement that is universal regardless of what you're wearing. But wind chill is an extremely unreliable means of conveying an approximate, subjective sensation, and it's completely negated by properly insulating clothing. If you are wearing a winter coat in 40 below with wind chill of -100, it will certainly not feel like you were actually standing in -100 degree weather.
It was one degree yesterday morning going to work and without wind that was cold as fuck. There is no way in hell I'd consider stepping foot out in that. Hope your heaters work damn good.
[QUOTE=Tobba;53029488]It doesn't magically make the air colder though, and there's no reasonable way to give an equivalent temperature at zero wind - it's heavily dependent on things like what clothes you're wearing, how you wear them, body temperature, body heat, breathing rate, etc. You can adjust all of those to suit the weather.
For example: at -10°C/14°F you could wear a wind jacket just fine regardless of wind speed, but a hoodie would get pretty cold if it was blowing. Not the best example at the temperatures involved here, but you get the idea. Wind also doesn't affect the air in your lungs which is a big source of heat loss, not to mention breathing starts to become tricky once you go below -30C or so. Unless you work in public safety or something, the apparent temperature alone won't tell you jack shit.[/QUOTE]
You're still missing some fairly basic points of thermodynamics, though. Even if the actual model is complex, I fail to understand why you continue to argue when the concept is so simple: your skin is a heat source. Wind acts like a fan on a CPU cooler, accelerating the rate of energy transfer between your skin (a heat source) and the air.
Granted, it gets more complex when you include the lowered specific heat (and thus reduced heat "capacity") of cold dry air. But that doesn't make wind chill any less real.
Have you ever actually been out in 14F temperatures? Better have a damn nice jacket because that's about when it's cold enough that your face just hurts going outside. In North Dakota I got to experience -20 and at that point it just hurts to [I]breathe[/I]. Looking back, it seems you have experienced cold temepratures but the way you approach it makes it seem like you're continuing this for the sake of dickwaving, I.E. "that's not real cold, up here in bumfuck nowhere it gets down to..."
My friends did a year over at a base on Antarctica and there's a club they joined for running naked from base to the geographical south pole and back butt naked then jumping into the hot sauna when it's -100F or below.
Can't imagine that, or this. NH is forfeit.
[QUOTE=catbarf;53029555]Which doesn't take into account surface area, or insulation, or air pressure, or any of the other factors that directly impact how cold it subjectively feels. With decently insulating clothing, wind chill has next to no impact.
Tobba is entirely correct. Temperature is an objective measurement that is universal regardless of what you're wearing. But wind chill is an extremely unreliable means of conveying an approximate, subjective sensation, and it's completely negated by properly insulating clothing. If you are wearing a winter coat in 40 below with wind chill of -100, it will certainly not feel like you were actually standing in -100 degree weather.[/QUOTE]
I'm surprised no one's posted this yet, to settle this silly debate.
[quote=Wikipedia article on Wind Chill]It [the wind chill formula posted on the previous page] is determined by iterating a model of skin temperature under various wind speeds and temperatures using standard engineering correlations of wind speed and heat transfer rate. Heat transfer was calculated for a bare face in wind, facing the wind, while walking into it at 1.4 metres per second (5.0 km/h). The model corrects the officially measured wind speed to the wind speed at face height, assuming the person is in an open field.[/quote]
When meteorologists report wind chill, it is an objective estimation derived from empirical data based off an exposed bare face that is turned toward the wind.
So if a wind chill is reported as -100*F, then that means that if you were to stand bare-faced outside and turn head-on toward the wind, the heat transfer your face experiences would be equivalent to if your bare face was exposed to a still-air temperature of -100*F.
That's -73.C, um what?
The wind chill stuff is a bit misleading, because you won't be able to for instance cool something to -100f by placing it outside in that weather.
I get why the system exists, but I feel like there could be a better system that more clearly separates actual temperature from effective heat loss.
I've come across plenty of people who think the wind chill stuff is the literal temperature, and i find that to be a problem.
[QUOTE=FFStudios;53029272]on top of that, any poor fucker living on the coast in NH is currently also most likely experiencing a little something like this outside their front door thanks to the historic high tide marker
[img]https://i.imgur.com/Pe0aBjR.jpg[/img]
that's about a foot of pure icy hell if i've ever seen one. that colored post sticking out of the ground is a flag on a fire hydrant, for reference[/QUOTE]
we just got the end of this storm up here in nova scotia canada, not frozen yet though.
[t]https://scontent.fyaw1-1.fna.fbcdn.net/v/t1.0-9/26168694_515927982120705_8015478975157516847_n.jpg?oh=ce8e8a8cbc3ca209514deefebb578d54&oe=5AB7AB50[/t]
[QUOTE=Speedhax;53029632]That's -73.C, um what?[/QUOTE]
its possible, and extremes like this are only going to get worse
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