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    Offline use of Windy

    Frequently Asked Questions
    grib file offline download
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    • Hidalgof
      Hidalgof | Premium last edited by

      Hi,

      Would you be able to find a workaround for this issue?

      For example a "Print Report" option that generates a PDF that we can use after we lost connection.

      This is a common feature in websites like Met Office.

      In that way you won't be exporting the data but "visualising" it on "paper" (PDF).

      It should to be a work around... At the moment the only option are screenshots or printing the forecast before leaving home...

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

        @Hidalgof
        Hi,
        For me the best way is to keep the forecast in a small video. There are many « Screen recorder » which are available. On iPad and iPhone this is a standard feature that I use sometime.
        You just need to activate the time slider to get a 10 days-video forecast. Only 1 file per layer. If you need the forecasts of 3 different layers e.g. Wind, Gusts, Rain, then you have only 3 files.
        Looking to the forecast offline, you can stop the video where you need to analyse the details.
        https://community.windy.com/topic/7745/recording-data-to-replay-it-when-offline

        1 Reply Last reply Reply Quote 2
        • C
          Curtis2010 | Premium last edited by

          The liscencing issue only applies to ECMWF. All model output produced by USA agencies is public domain (free to use, no liscencing). So Windy could work with GRIB output from GFS with no issues. Windy already supports use of GFS so this should be a relatively straight forward implementation.

          Implementing GRIB viewing capability in Windy would be a powerful addition. End users could download their own GRIBs, from whatever model(s) they choose, and view in Windy (as is now done by all other GRIB viewers).

          For us offshore sailors, who commonly have the ability to download a GRIB over low bandwidth interfaces which wont reliably support an online session, this would be a great upgrade vs existing GRIB viewers (many of which are a bit clunky).

          mhaberler aaka 2 Replies Last reply Reply Quote 3
          • mhaberler
            mhaberler @Curtis2010 | Premium last edited by

            @curtis2010 I agree - reading grib files would be superb @ivo @rittels

            It would potentially fix a few issues with windy:

            • enable usage of models which are currently not supported in the stock windy models - for example the upcoming ICON-D2 (sequel to Cosmo-D2) which is very high resolution (2.2km, 27hrs in 3hr steps) and covers quite some Europe (page 12)
            • it could fix the 'no history in windy' issue - by viewing and downloading archived gribs
            • in the case of the trajectory plugin, it could improve both horizontal as well as vertical resolution substantially - for instance, ICON-D2 hast some 91 levels of which about 25 are in the 0-6000m regions which is relevant for me
            • enable viewing values which are not in the stock windy layers set. Example: the vertical wind component in ICON-D2.

            I concur that the 'market' of current grib reader apps is ready for some disruption...

            I'd not necessarily be asking the windy folks to "support that feature" by taking on the load of supporting an extra model or new layers. That is substantial effort.

            However, a blessed route to achieve this by say an API to introduce custom layers and data sources - maybe via a plugin and a local WMS server á la SkinnyWMS serving gribs would be great!

            Michael

            Michael

            mhaberler 1 Reply Last reply Reply Quote 1
            • mhaberler
              mhaberler @mhaberler | Premium last edited by

              @mhaberler

              it might not be that hard to integrate client-side reading of gribs for the determined

              I could read ICON-D2 wind u/v gribs just fine with this JS library: https://github.com/UdSAES/grib2-simple

              Michael

              mhaberler 1 Reply Last reply Reply Quote 0
              • LIM MING TE Moe
                LIM MING TE Moe @s_meach last edited by

                @s_meach 🙂🙂🙂

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

                  @mhaberler Here's a proof of concept using the ICON-D2 short term weather model from DWD.de - grid 2km, about 35 elevation levels below 5000m - way beyond other models in horizontal and vertical resolution:

                  Cesium animation of Icon-D2 windfield

                  here you can play live with it - zoom in and click on wind arrows

                  Michael

                  1 Reply Last reply Reply Quote 2
                  • Referenced by  idefix37 idefix37 
                  • aaka
                    aaka @Curtis2010 | Premium last edited by

                    @Curtis2010 French datas aree also free of charge

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

                      @aaka I don't see any licence restrictions on ECMWF website either. A tot of Apps are delivering gribs from ECMWF
                      https://www.ecmwf.int/en/computing/software/ecmwf-web-api

                      1 Reply Last reply Reply Quote 0
                      • Referenced by  idefix37 idefix37 
                      • M
                        marouanebj last edited by

                        It is incredible that the question raised in 2018 and plenty of solutions proposed are not implemented, or maybe they are but this has not been said here.
                        So what you say is even if I want I cannot say to the app save forecast for this region for next month and go offline? Because this way you would break no agreement.

                        1 Reply Last reply Reply Quote 0
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