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    What source of weather data Windy use?

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    • jmh2002
      jmh2002 Moderator Mariners - Seafarers Sailor last edited by

      @Korina @developers

      Please review these last comments and note and discuss with the development team regarding how this can be improved, thank you :)

      WINDY is everywhere :)

      Korina 1 Reply Last reply Reply Quote 1
      • Korina
        Korina Administrator @jmh2002 last edited by

        @jmh2002 @idefix37 @vsinceac Hi all, it seems as a bug, I will let our development team know. Thank you for reports!

        Korina

        1 Reply Last reply Reply Quote 3
        • P
          peteraschindler | Premium last edited by

          You mention that NEMS is only available in Europe.
          But, I'm based in Hong Kong, and METEOBLUE is shown, besides GFS and ECMWF, as models for this location.
          Why?
          Thank you!
          Peter S

          Korina idefix37 2 Replies Last reply Reply Quote 0
          • Korina
            Korina Administrator @peteraschindler last edited by

            @peteraschindler Hello, NEMS is a local weather model created by Meteoblue. Meteoblue model is only available in the detailed forecast and yes, it is global model.

            Korina

            1 Reply Last reply Reply Quote 0
            • idefix37
              idefix37 Sailor Moderator @peteraschindler last edited by

              @peteraschindler
              Find here additional information about the difference between NEMS and METEOBLUE. It is called Meteoblue AI by this forecast provider:
              https://community.windy.com/topic/10316/metoblue-wildly-inaccurate-in-the-sw-usa/4?_=1588859394205

              1 Reply Last reply Reply Quote 0
              • Yves70
                Yves70 Meteorologist | Premium last edited by

                @peteraschindler
                Meteoblue is a Swiss company who developped a global model called NEMS. With this model, you can get weather forecast all over the world as this a global model, as GFS for instance.

                1 Reply Last reply Reply Quote 0
                • J
                  jerryw @Zeeshi7897 | Premium last edited by

                  @Zeeshi7897

                  1 Reply Last reply Reply Quote 0
                  • Y
                    yqw last edited by

                    What is the data source for satellite? How does Windy get it from EUMETSAT?
                    1.png
                    If it is EUMETCast Satellite Europe - Ku-band than what do you get from it?
                    2.png
                    Does Windy pay EUMETSAT for it?
                    alt text

                    Korina 1 Reply Last reply Reply Quote 0
                    • Korina
                      Korina Administrator @yqw last edited by

                      @yqw Hello, the source is Eumetsat and data are displayed based on the contract.

                      Korina

                      1 Reply Last reply Reply Quote 1
                      • T
                        TTurbyfill8 @sv1aaw | Premium last edited by

                        @sv1aaw That would be great. WU was extremely accurate until Weather.com bought them and they dismantled the PWS network. I am in Central America and the WU 6 hour graphic forecasts could be relied upon. It was a game to see how accurate they were to the quarter hour.

                        1 Reply Last reply Reply Quote 0
                        • howardkuo
                          howardkuo last edited by

                          Is it possible to default to NAM instead ECMWF?

                          idefix37 1 Reply Last reply Reply Quote 0
                          • idefix37
                            idefix37 Sailor Moderator @howardkuo last edited by

                            @howardkuo
                            The default model of Windy is the model from ECMWF. It is not possible to set another model as default.

                            1 Reply Last reply Reply Quote 0
                            • F
                              foobarjo @dzuremar last edited by

                              @dzuremar said in What source of weather data Windy use?:

                              @idefix37 Hello ! We use AROME with resolution 0.01° (1.3km). Both of the AROME resolutions have 00, 06, 12 and 18 ref time runs. There are also 03, 09, 15 and 21 ref time runs which we don't process. Advantage of AROME 0.025° (2.5km) is that it includes pressure-level layers. AROME 0.01° provides only surface-level layers, only wind and relative humidity are additionally in 20m, 50m and 100m altitude. However, AROME 0.025° also covers much smaller area - a square that covers whole France and a bit of surrounding area.

                              It seems that the AROME 0.025 now cover the same area as AROME 0.01. Is there any chance that Windy switch, or add AROME 0.025 to the supported models? The area of new icon D2 is quiet small either. The french paragliding community badly needs the pressure layers on the AROME model

                              1 Reply Last reply Reply Quote 0
                              • Arda Gulcil
                                Arda Gulcil last edited by

                                Hello, my first message/question in the community hope no problem to ask such question. Which model you suggest to use in sailing in Turkish Aegean and Mediterranean coasts ? Thanks
                                Arda

                                Korina idefix37 2 Replies Last reply Reply Quote 0
                                • Korina
                                  Korina Administrator @Arda Gulcil last edited by

                                  @arda-gulcil Hello, I recommend trying all the available models to find the best one for the location.

                                  Korina

                                  1 Reply Last reply Reply Quote 1
                                  • idefix37
                                    idefix37 Sailor Moderator @Arda Gulcil last edited by idefix37

                                    @arda-gulcil
                                    Hi,
                                    I would not recommend only one model.
                                    You know there are models providing long-range forecast (up to 10 days) and some short-range forecast (up to 2 days). The first ones have a lower resolution (about 10km or more), the second ones have a higher resolution (about 4km) in your area.
                                    So the first ones are useful to know the weather in the next 5 or 7 days.
                                    In this category I would recommend the ECMWF model, for instance to know if the Meltem wind is predicted to be strong next week.
                                    For medium-range forecast try ICON EU
                                    And for the shorter-range forecast it is better to use NEMS as this Mediterranean area shows a large quantity of mountainous coasts and islands. So you need a high resolution model to get more precision about wind force and direction. Local winds are highly influenced by mountains in the Aegean Sea.

                                    Examples today at same hour
                                    (shown with customized colours for wind):

                                    ECMWF 9km resolution - 10-days range.
                                    The Meltem strength is shown to be fairly even.

                                    1BE425B3-B50E-4739-86C4-36AAB2513D23.jpeg

                                    ICON 7km resolution - 5-days range
                                    The wind is shown stronger between islands and weaker on leeward coasts.

                                    716C9E89-D08F-42F7-B730-C95EFAFC2D81.jpeg

                                    NEMS 4km resolution - 2.5-days range
                                    The wind is shown even more accurately around islands and capes.

                                    FDAE1F5B-6A50-4BFC-9BC6-6B4598F8D336.jpeg

                                    My colour scale for wind is
                                    Blueish green : 4 Beaufort
                                    Bright green : 5 Beaufort
                                    Orange : 6 Beaufort

                                    Arda Gulcil 1 Reply Last reply Reply Quote 3
                                    • Arda Gulcil
                                      Arda Gulcil @idefix37 last edited by

                                      @idefix37 thank you very much ,crystal clear.

                                      1 Reply Last reply Reply Quote 0
                                      • rkeel61
                                        rkeel61 @TomSlavkovsky | Premium last edited by

                                        @TomSlavkovsky why don't you go through the help settings and figure it out.
                                        Why do people say the dumbest thing.
                                        They've got four models they use.
                                        Mind boggles me what's wrong with people

                                        rkeel

                                        Korina 1 Reply Last reply Reply Quote 0
                                        • Korina
                                          Korina Administrator @rkeel61 last edited by

                                          @rkeel61 What are you referring to please?

                                          Korina

                                          1 Reply Last reply Reply Quote 0
                                          • john marshal
                                            john marshal last edited by john marshal

                                            Hello, I was attempting to utilize your application here in Norway for snowkiting, and water currently in spring/summer. Anyway information utilized in Windyty is exceptionally erroneous for here, all accounts 90% exact.

                                            Korina 1 Reply Last reply Reply Quote 0
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