Questions about custom weather presets (.wpr) files

Hi all !

I’m looking for some details about wpr files, including the compatibility of wpr files between MSFS2024 and 2020 .

I’m building an external software (also using ingame toolbar panel), to handle and create wpr custom files, which will be made available in the sim using a community folder, either based on a custom METAR or other parameters. It’s hard to get detailed and accurate informaiton about how these wpr files work exactly, either just in one sim version or between MSFS2020 / 2024 . I also checked SDK documentation for both sim versions, and it looks exactly the same.

What I’ve seen so far :

  • it seems MSFS(2024 at least) presets require exactly 3 clouds layers . I tried different ones with 2 or 4 cloud layers, and the wpr does not work.
  • Well known story, but we have to create a wind layer on the ground with specific wind speed, in order to compensate for the speed being cutted by half automatically by the sim(s) . Don’t know if this is something which has been improved / corrected recently.,
  • The SDK doc mentions <SimBase.Document Type=“WeatherPreset” version=“1,3”> , while all presets I do from the sim itself are 1.4 ….. Does anyone know what’s the difference here ?

In the end, I often have a problem to build a single WPR file, which would be fine to work in 2020 AND 2024 …. while according to the doc that should be quite simple.

Finally, if anyone can provide any additional information about what is supposed to work or not, or if some useful information is available somewhere, that would be much appreciated !!

Thanks,

Jerome