@o0snoopy0o
Yes, @idefix37 is right, below 0.4-0.5mm of rain, you can even not notice it,...

@nwindy
You have 2 types of weather forecast :

1. Deterministic
2. Ensemble

The first one is the one proposed by Windy models and gives you one forecast at a specific day and specific hour. There is no probability associated with this forecast because this is one single forecast calculated by the model deterministic.

Now, when we talk about ensemble weather forecasting, the model here doesn't calculate only one single forecast but a group of around 20 forecasts, each obtained by changing some parameters. From this ensemble of 20-21 forecasts at a specific day and specifc hour, you can extract data in this case with probabilities like 40% chance of rain for July the 15th at 3.00PM. This is very useful to be able to quantitify the incertitude on data

This ensemble approach looks great but because of the increase number of calculations (20-21), grid will be much bigger and therefore data will be less accurate

@bbekar
This is not Windy site which updates the weather forecast but the model you use. Each model has different interval. For instance, GFS updates the forecast every 6h so 4 times a day when ECMWF (IFS) updates every 12h so 2 times a day. When a model is chosen, you can check with your computer or your smartphone when the next update will be

As you can see here above, it is GFS, interval 6-7h and next update is indicated, in 5h41m

@nwindy
Yes, the way the ensemble model calculates the probability is as you explain : for instance for the rain, each dot of the 21 dots can give a different level of rain (1mm, 4mm, 10mm,...). Based on that set of different levels of rain, the model can calculate several probabilistic values such as the average, variance,... This will allow you to quantify the risk of rain

Now, if the model has to adopt the same approach for many other parameters, such as pressure, temperature,... And for each parameter do the 21 calculations (do not forget that each calculation is the equivalent of a single deterministic calculation), computional limitation will be the issue if the model keeps the same grid. To overcome this problem, grid is bigger, calculation of the 21 dots for the different parameters becomes ok but accuracy will decrease.

Computational calculation is key. In average, weather forecast improves by one day every 10 years thanks to the computer (super calculator) progress

Hello,
It is available : https://community.windy.com/topic/10126/new-map-on-windy-active-fires

@idefix37
I agree with you, I strongly prefer the new set of colours associated with the pressure map !
Having said that, as Windy allows us to chose the palette of colours we want, this is not a problem for those who don’t like to change them 😅

@Gkikas-LGPZ
Thanks for the different links !

@johnckealy
Weather forceast model is a fascinating topic ! The more you use them the better you understand them, you know when one model can be more accurate than another, what model can or cannot do. IFS is probably one of the best model to predict the changes at synoptic level (1000 or 2000km) when Arome is capable to solve and calculates convection which can be useful to predict thunderstorms.

Of course we can keep using one model only but Windy offers the possibility to easily compare the results from the different models so it is a nice and easy way to check the consistency between the models and therefore give you more confidence about the weather forecasts.

@knutu
This is correct that in some occasion there is an annoying overlapping between clouds, altitude and rainfall as shown below, blue figures are overlapping grey figures :

@idefix37
Thanks for your comment !

We are talking about small quantities of rain, of course. In general below 0.4mm you even don’t really notice it if you are outside ! It could be related to the the way it is rounded but as you highlight, the 0.5mm is harder to explain.

I wanted to mention it again to be sure it is not related to something else, sometimes small inconsistencies like in the case here hide in fact a bigger problem. Windy team should just comment and confirm.

I can monitor it during the coming days/weeks, especially a day with much more rain to see if the difference 3h/1h rain forecast remains still small or not

@Ridagstran
Windy allows you to change the colours and define the scale as you wish and according to your préférences, for many different maps, pressure, temperature,...

There are a lot of good posts on this community explaining how to do it :
https://community.windy.com/topic/10336/customize-the-color-scales-of-windy-layers?_=1596358666767

@o0snoopy0o
Yes, @idefix37 is right, below 0.4-0.5mm of rain, you can even not notice it,...

@idefix37
Yes, indeed, would be great to see the RH includes in the basic meteogram.
The humidity map is not the exact answer to his request but at least by using it he can already get some daily forecast for RH until Windy includes perhaps one day the RH data in the basic meteogram

@idefix37
@kevg1999

Why not to use the humidity map ?
By selecing your location you have the humidity at this location (with the picker) but you can also see the forecast

@bbekar
This is not Windy site which updates the weather forecast but the model you use. Each model has different interval. For instance, GFS updates the forecast every 6h so 4 times a day when ECMWF (IFS) updates every 12h so 2 times a day. When a model is chosen, you can check with your computer or your smartphone when the next update will be

As you can see here above, it is GFS, interval 6-7h and next update is indicated, in 5h41m

@WeatherMonk
There is no user guide but you can check the following link which can give you some explanation about the maps and the different icons used :
https://community.windy.com/topic/3361/description-of-weather-overlays

@Gkikas-LGPZ
Thanks for the different links !

@wijtenburg
Windy proposes in one application a lot data from different models. Windy didn’t develop its own model.
When you check the weather forecast, it is very important to use the compare tool proposed by Windy. This will allow you to compare the weather forecast coming from all the different models proposed by Windy for your location. You will be able to see the consistency of the models or on the contrary that sometimes, one model will forecast rain and the other sun. Interesting is to try to understand why one model proposes rain when the other proposes sun. There are always reasons behind each scenario !

Finally, some situations are much more complicated to predict than others as thunderstorms because they are linked to local elements so small scale (10-20km)

@idefix37
I never used this map so far.
What type of info can you get from this Windy map ? How do you interpretate it ? Who are the typical users of this map ?

@molnia777
@Tank302

@molnia777 It seems that Tank302 is using the codes you would like to get so maybe he can copy the codes in the settings and paste them here