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Did everyone else know this but me? Weather temperatures

111 replies

Lottle · 05/06/2023 09:15

I just found out that the temperatures given in the weather forecast are the temperatures in the shade!

No wonder I was constantly overdressed and boggled that "oh this is warm for 19 degrees".

What else don't I know?!

OP posts:
EileenAdler · 05/06/2023 11:38

We covered “climate and weather” in science at school. We even had a weather station.

Bewilderedandhurt · 05/06/2023 11:38

It's actually the ambient air temperature as surfaces of different materials and colour absorb the sun's radiation differently.

diddl · 05/06/2023 11:39

My current forecast is 22, feel feel sun 27, 0% chance of rain.

I'll take that!

Soundbathfan · 05/06/2023 11:46

Well I'm 37 and learned something new today

JudgeJ · 05/06/2023 12:03

TequilaNights · 05/06/2023 09:41

Yes, they can't take temperature in the sun because the solar radiation would heat the thermometer, giving a much higher temp, so temperature is always taken in the shade from air temp.

www.metoffice.gov.uk/weather/guides/observations/how-we-measure-temperature

My outdoor thermometer burst last summer because ot was in the direct sun!

JudgeJ · 05/06/2023 12:05

AmilyChestnut · 05/06/2023 09:21

@Lottle I did not know that! That's very interesting.

Did you know that the arrow next to the fuel sign on the dashboard indicates which side your fuel cap is?

I've never seen this in a car, even hire cars abroad, it only seems to occur on MN!

DeflatedAgain · 05/06/2023 12:08

🤯

Abracadabra12345 · 05/06/2023 12:11

JulianFawcettMP · 05/06/2023 10:47

I'm thoroughly enjoying all of the posters snidely expressing surprise and bafflement that not everyone knows this.

I did know but I can guarantee that there are things others consider common knowledge that I don't know. And the same applies to the superior posters on this thread. NOBODY KNOWS EVERYTHING, get over yourselves.

Thank you, I was thinking the same!

GeraltsBathtub · 05/06/2023 12:12

Lottle · 05/06/2023 10:46

@LlynTegid stand on the right on an escalator? The opposite to roads?!

Don't worry, if you ever go to London there are signs telling you to do this 🙂it’s so people can walk past you on the left

Nanny0gg · 05/06/2023 12:31

EarlofShrewsbury · 05/06/2023 09:28

Did you know that the % given for rain isn't the % chance of rain but the percentage of the area forecast rain that will actually get rain.

If that makes sense.

That I didn't know!

Nanny0gg · 05/06/2023 12:32

JudgeJ · 05/06/2023 12:05

I've never seen this in a car, even hire cars abroad, it only seems to occur on MN!

It's on my car (Ford)

Bitofafixerupperer · 05/06/2023 12:36

Whatt · 05/06/2023 09:36

So last year when it was 40 degrees it was actually higher? As there was barely any shade.

Yes. I had it recorded (from a thermometer in the garden) at nearer 43/44 in the sun on some of the 40 degree days.

Daftasabroom · 05/06/2023 12:43

HarpyValley · 05/06/2023 10:24

The % rainfall thing is based on forecast modelling. So if the forecast says "50% chance of rain" it means 50% of the weather models predict rain and 50% don't.

It doesn't work like that, the majority of forecasters only use one model depending on the predictions required. What can vary are the input parameters and these are sourced from.

But different versions give slightly different results, so I find the US Navy NAVGEM best at long range.

The majority of forecasters calculate % as confidence x area. The area would usually be the resolution of the forecast.

Sunflowers80 · 05/06/2023 12:46

Yes I knew that and my mum from a Mediterranean country thinks they fiddle the figures here. Some days they say its baking hot and it isn't and she thinks they put it directly in the sun to make out it's hotter than Spain, Greece or Italy and the media can salivate on it lol

diddl · 05/06/2023 12:48

It's on my car (Ford)

Misread that as Fred & thought that that was a great name for a car!

amusedbush · 05/06/2023 12:49

JudgeJ · 05/06/2023 12:05

I've never seen this in a car, even hire cars abroad, it only seems to occur on MN!

I have it on my current car (Seat) and had it on my last one (Suzuki).

It's very handy because I'm an idiot and, even though I've had my car for over a year, I have to check the arrow more often than I'd like to admit Grin

Leftbutcameback · 05/06/2023 12:53

Often during sporting events they will give a shade temp and a temp in the sun, and a surface temp. So for example f1, or tennis. It’s always interesting to see how much it varies.

KnickerlessParsons · 05/06/2023 12:57

Whatt · 05/06/2023 09:41

So I wonder what the real temperature was if it was 40 in the shade...

Would've made a better headline

Read the other flipping posts - that was the real temperature. Any "temperature" reading taken in direct sunlight is a false interpretation, as per the previous explanations

celticprincess · 05/06/2023 13:01

This was what I said when my sister wanted me to get a dna test for ancestry purposes. Then she explained. And the results show that we do have very different dna. We both get a different % from each parent and in turn that percentage might have more or less of their parents etc.

celticprincess · 05/06/2023 13:02

The temperature thing makes sense when you think about cars. On a sunny day I get into my car and it measures 30 degrees when it’s been sat in the same spot for a period of time but as we drive it comes down to the more accurate 18/20 or so degrees. This is true of being in the shade and in the sun - the shade just gives a cooler higher reading.

CharlottenBurger · 05/06/2023 13:04

When I watched the adorable Ian Fergusson doing the BBC Points West weather forecast, if the weather forecast showed scattered showers as blue blobs moving across the map, I used to wonder 'How do they know there'll be a little shower over Bath at exactly 3 PM?

Daftasabroom · 05/06/2023 13:09

CharlottenBurger · 05/06/2023 13:04

When I watched the adorable Ian Fergusson doing the BBC Points West weather forecast, if the weather forecast showed scattered showers as blue blobs moving across the map, I used to wonder 'How do they know there'll be a little shower over Bath at exactly 3 PM?

Radar is used to look for rain (and wind), the weather models then use the radar to extrapolate into future.

Look up rainfall radar, although not much point today.

CharlottenBurger · 05/06/2023 13:12

KnickerlessParsons · 05/06/2023 12:57

Read the other flipping posts - that was the real temperature. Any "temperature" reading taken in direct sunlight is a false interpretation, as per the previous explanations

There was an old alleged 'record' temperature in Seville of 50° which has been widely discredited because it was probably taken with a thermometer in the street in direct sunlight. When I was at school they had a weather station and the thermometer lived in a little house on a pole, painted white, with louvres to let air in and out.

CharlottenBurger · 05/06/2023 13:29

Daftasabroom · 05/06/2023 13:09

Radar is used to look for rain (and wind), the weather models then use the radar to extrapolate into future.

Look up rainfall radar, although not much point today.

Yes, I know that, but I believe now (unless you can disabuse me) that the scattered moving blobs in the animated graphic are purely to suggest that the scattered showers will be local in extent, but not where and when they will happen. They are illustrative rather than indicative.* *Can the models really tell that there will be a shower a mile wide in one place at an exact time 24 hours in the future?

Daftasabroom · 05/06/2023 13:33

CharlottenBurger · 05/06/2023 13:29

Yes, I know that, but I believe now (unless you can disabuse me) that the scattered moving blobs in the animated graphic are purely to suggest that the scattered showers will be local in extent, but not where and when they will happen. They are illustrative rather than indicative.* *Can the models really tell that there will be a shower a mile wide in one place at an exact time 24 hours in the future?

Scattered showers no, not in 24hrs. I was thinking more 15 to 30 minutes, I'm a bit obsessive over the weather due to the sport I play.

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