Windy Community

    • Register
    • Login
    • Search
    • Unread
    • Categories
    • Groups
    • Go to windy.com

    What source of weather data Windy use?

    Frequently Asked Questions
    model grib file
    41
    63
    149791
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • idefix37
      idefix37 Sailor Moderator @jmh2002 last edited by idefix37

      @jmh2002
      I don’t think a warning pop up would be a good idea (it is not in the Windy culture). IHMO it could be done automatically when isobars are selected together with satellite layer i.e. isobars should be displayed at about same hour as the last satellite observation as @Gkikas-LGPZ said.
      I think this is possible in the same way as when you select Rain accumulation with ECMWF at 10 days and switch to ICON, the time lapse is automatically set back to 12h.

      1 Reply Last reply Reply Quote 2
      • 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
                                            • First post
                                              Last post
                                            Windyty, S.E. - all rights reserved. Powered by excellent NodeBB
                                            NodeBB & contributors, OSM & contributors, HERE maps
                                            Terms and Conditions     Privacy Policy