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    What source of weather data Windy use?

    Frequently Asked Questions
    model grib file
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    • idefix37I
      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
      • foobarjoF
        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 GulcilA
          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

          KorinaK idefix37I 2 Replies Last reply Reply Quote 0
          • KorinaK
            Korina @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
            • idefix37I
              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 GulcilA 1 Reply Last reply Reply Quote 3
              • Arda GulcilA
                Arda Gulcil @idefix37
                last edited by

                @idefix37 thank you very much ,crystal clear.

                1 Reply Last reply Reply Quote 0
                • rkeel61R
                  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

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

                    @rkeel61 What are you referring to please?

                    Korina

                    1 Reply Last reply Reply Quote 1
                    • john marshalJ
                      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.

                      KorinaK 1 Reply Last reply Reply Quote 1
                      • KorinaK
                        Korina @john marshal
                        last edited by

                        @john-marshal Hello, what weather model and layer were you using, please?

                        Korina

                        1 Reply Last reply Reply Quote 1
                        • G
                          greyhappy @codeskipper
                          last edited by

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

                          @ivo from what you can read at https://www.yr.no/artikkel/information-about-yr.no-1.2025949 the Norwegian national weather service use ECMWF data as just one of their sources for their own forecast model.

                          From comparing their Grib data with ECMWF as used in Windy now, I find the yr.no significantly more accurate, at least for my area of SW Norway.

                          Yr.no make their own data freely available, please see https://api.met.no.
                          For my area, I just use this url manually: https://api.met.no/weatherapi/gribfiles/1.1/?area=west_norway&content=weather

                          I would greatly appreciate for you to consider adding this data source to Windy as well, so the best interface could be used with the most accurate weather model. For starters, how about adding a feature to copy a grib file into Windy from another app?

                          Cheers,
                          Martinus

                          Thank you!

                          1 Reply Last reply Reply Quote 2
                          • P
                            Plux
                            last edited by

                            How can i save the preferable fcst model? When i open my app, it always shows ECMWF and i need to switch to ICON-EU.
                            Thanks

                            idefix37I 1 Reply Last reply Reply Quote 0
                            • idefix37I
                              idefix37 Sailor Moderator @Plux
                              last edited by idefix37

                              @Plux
                              In Settings -> Start-up location and layer -> Start-up layer -> Use last overlay. Then you need to leave the app using your preferred model.

                              1 Reply Last reply Reply Quote 3
                              • Catalin-Adrian PisoiuC
                                Catalin-Adrian Pisoiu | Premium
                                last edited by

                                Lately seems that weather company data become so reliable for eastern Europe but Weather Channel is a shitty app. Are there any plans to include that data as a new model in Windy Premium? I know that the API is paid to access but maybe a new plan can be introduced to offer it. As Premium user I am willing to pay extra for that 😁

                                1 Reply Last reply Reply Quote 3
                                • Steve DiazS
                                  Steve Diaz
                                  last edited by

                                  Great work ! Thanks for sharing .

                                  1 Reply Last reply Reply Quote 0
                                  • manzoorraypurM
                                    manzoorraypur
                                    last edited by

                                    Windy utilizes a combination of weather data sources to provide comprehensive forecasts. These include data from global weather models, satellite imagery, weather radar, and ground-based weather stations.

                                    1 Reply Last reply Reply Quote 1
                                    • M
                                      MihneaAM
                                      last edited by

                                      Hello. You should update the map/list with the ALADIN model from CHMI.

                                      idefix37I 1 Reply Last reply Reply Quote 0
                                      • idefix37I
                                        idefix37 Sailor Moderator @MihneaAM
                                        last edited by

                                        @MihneaAM
                                        It is already there
                                        AB6F79A0-262C-466C-9689-8892C0EC3FC8.jpeg

                                        M 1 Reply Last reply Reply Quote 1
                                        • M
                                          MihneaAM @idefix37
                                          last edited by

                                          @idefix37 I'm referring to the first post of this topic, not to the application itself.

                                          idefix37I 1 Reply Last reply Reply Quote 0
                                          • idefix37I
                                            idefix37 Sailor Moderator @MihneaAM
                                            last edited by idefix37

                                            @MihneaAM
                                            This post is very old (2015) but several models have been updated in the list.
                                            However ALADIN now is missing and MSM too.
                                            https://community.windy.com/topic/12/what-source-of-weather-data-windy-use?sort=oldest_to_newest
                                            Then there is a mistake when it is said that “ICON Global - the model is operated by the United States National Weather Service (NWS)” !
                                            And the pictures showing the model resolutions are showing in fact the domain of the models.

                                            1 Reply Last reply Reply Quote 2
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