Wind chill

[psycho22]

I am not wearing my glasses, it looks like a little purple graph thing really.

Wind chill at 100kph would be roughly 4 degrees so that means the air hitting your face feels like it is 4 degrees

[psycho22]

That doesn't sound quite right but according to the calculator Steve put up it is.

And that wouldn't factor in wind that might or might not be present at the time.

[Katman]

That doesn't sound quite right but according to the calculator Steve put up it is.

And that wouldn't factor in wind that might or might not be present at the time.

It depends on the ambient temperature.

[Mom]

Wind chill at 100kph would be roughly 4 degrees so that means the air hitting your face feels like it is 4 degrees

So, on a hot summers day, travelling at 100 kph the wind on my face would feel like 4 degrees? That does not seem right?

Or are you saying 100 kph lowers the air temp by 4 degrees, so that the actual air temp is lowered by 4 degrees at 100kph? Is that constant?

[psycho22]

And probably many other things so all you can have is a rough indication.

That or buy a guage if you really want to know exactly.

[johan]

If you have a glass of water outside, ambient temperature +2 degrees C, the wind is 20 knots.

That's some serious wind chill.

Will the water freeze?

[Katman]

So, on a hot summers day, travelling at 100 kph the wind on my face would feel like 4 degrees? That does not seem right?

Or are you saying 100 kph lowers the air temp by 4 degrees, so that the actual air temp is lowered by 4 degrees at 100kph? Is that constant?

As I said, it depends on the ambient temperature.

Over a certain temperature the wind actually incurs a heat factor.

[Edbear]

As I said, it depends on the ambient temperature.

Over a certain temperature the wind actually incurs a heat factor.

Bit like KB then, blowing hot and cold...

[Mom]

Will some one do me the honour of actually explaining this to me. I dont want to read wiki till my brain bleeds attempting to understand it. In simple terms what is it, how does it work (apart from making you freeze faster, I took that as read already) and how do you calculate it?

[psycho22]

So, on a hot summers day, travelling at 100 kph the wind on my face would feel like 4 degrees? That does not seem right?

Or are you saying 100 kph lowers the air temp by 4 degrees, so that the actual air temp is lowered by 4 degrees at 100kph? Is that constant?

That was calculated at 10 degrees so if by a hot day you mean say 20 degrees, the air that is hitting you feels like it is roughly 8 degrees. Basically you would feel like your are in a room with the room temperature at 8 degrees. No it isn't constant as wind gusts or lulls would change it as would varying speed.

[Mom]

As I said, it depends on the ambient temperature.

Over a certain temperature the wind actually incurs a heat factor.

How does ambient temperature affect it? You mean on a really stinking hot summers day you can actually feel hotter? I know that one. So how doe s this work?

[psycho22]

Sorry im not very good at explaining things

[Mom]

That was calculated at 10 degrees so if by a hot day you mean say 20 degrees, the air that is hitting you feels like it is roughly 8 degrees. Basically you would feel like your are in a room with the room temperature at 8 degrees. No it isn't constant as wind gusts or lulls would change it as would varying speed.

So at 20 degrees air temp, I am feeling 8 degrees of air temp through my partially unzipped jacket while travelling at 100 kph? How the hell do I not freeze (figuratively of course)? 8 degrees is cold, I have never felt cold in the summer time. I love the "wind chill" then.

[johan]

I used to ride to school in -15 degrees and snow on my two stroke.

The only thing that kept you warm was wind proof clothing and many layers.

But us kids never thought twice about it, it was mostly fun sliding around the snow dodging traffic.

[Katman]

How does ambient temperature affect it?

Well it's one of the two factors involved in calculating it for a start.