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    NOAA is about to make some big changes to its global weather model

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    • Tomber42T
      Tomber42 Moderator
      last edited by

      Will windy switch to FV3?

      Greetings from Tomber

      1 Reply Last reply Reply Quote 3
      • D
        dootsonfire
        last edited by

        So is windy now running FV3 GFS?

        1 Reply Last reply Reply Quote 2
        • NrbelexN
          Nrbelex Photographer @TomSlavkovsky | Premium
          last edited by

          @TomSlavkovsky Now that the the NOAA has announced that the upgrade to the GFS model is live (https://www.noaa.gov/media-release/noaa-upgrades-us-global-weather-forecast-model), do the GFS forecasts in Windy reflect the upgrade?

          Thanks

          1 Reply Last reply Reply Quote 2
          • J
            jethroxd
            last edited by

            It's my understanding that GFS is fv3, as of now. GFS is the model that the Oceanic and Atmospheric Administration uses (noaa). Noaa has updated gfs to fv3, or gfs includes fv3, or it is a new model. All the same, i believe gfs is fv3? Still referred to as gfs. I have also read several reports that say that the new model may be as good as or better than the European model, interesting.

            ? 1 Reply Last reply Reply Quote 2
            • ?
              A Former User @jethroxd
              last edited by A Former User

              @jethroxd

              If so the practical differences in resolution and forecasting detail makes that sort of claim/comparison rather questionable, IMO.

              J 1 Reply Last reply Reply Quote 0
              • J
                jethroxd @A Former User
                last edited by

                As I said, interesting.

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

                  @TomSlavkovsky
                  Have you switched to the new GFS FV3 or is it still the old version which is used on Windy?

                  1 Reply Last reply Reply Quote 1
                  • T
                    TomSlavkovsky API developers | Premium
                    last edited by

                    @idefix37 yes, we are now using GFS FV3

                    idefix37I Tomber42T 2 Replies Last reply Reply Quote 3
                    • idefix37I
                      idefix37 Sailor Moderator @TomSlavkovsky
                      last edited by idefix37

                      @TomSlavkovsky
                      Thank you! It’s great to know!

                      1 Reply Last reply Reply Quote 0
                      • D
                        dootsonfire
                        last edited by

                        So what is the grid resolution? Windy still says GFS @ 22km but isn’t FV3 @ 13km?

                        1 Reply Last reply Reply Quote 2
                        • Tomber42T
                          Tomber42 Moderator @TomSlavkovsky
                          last edited by

                          @TomSlavkovsky said in NOAA is about to make some big changes to its global weather model:

                          @idefix37 yes, we are now using GFS FV3

                          You should clarify that in the text on the windy page if you click at clock symbol

                          Greetings from Tomber

                          Gkikas LGPZG anthony10A 2 Replies Last reply Reply Quote 3
                          • Gkikas LGPZG
                            Gkikas LGPZ Moderator Meteorologist @Tomber42
                            last edited by

                            @Tomber42
                            As I see the wind (or temperature) field over rough terrain (mountains)
                            I believe that GFS is (still) at 22km resolution.

                            idefix37I 1 Reply Last reply Reply Quote 1
                            • idefix37I
                              idefix37 Sailor Moderator @Gkikas LGPZ
                              last edited by idefix37

                              @Gkikas-LGPZ
                              @dootsonfire
                              @Tomber42
                              I have got some information from weather specialists and they confirm that:

                              • the old GFS v 14 had already a native resolution of 13km same as the new GFS FV3 v 15. This is the computational resolution.
                                It is confirmed by NOAA :
                                « GFS Version 15.1 maintains a horizontal resolution of 13 km and has 64 levels in the vertical extending up to 0.2 hPa »
                              • The old GFS was dispatched to users by GRIB files with a 0.25° resolution. And this is not changed with the new GFS FV3 v 15.

                              247D2E4C-0231-43E8-B073-6C12480714FE.jpeg

                              Note that 0.25° is close to 27 km, when 23 km is 0.2°

                              1 Reply Last reply Reply Quote 1
                              • anthony10A
                                anthony10 @Tomber42 | Premium
                                last edited by

                                @Tomber42 I would also like to see the FV3 being shown in the Clock info panel, something like (GFS - FV3) just to be more clear. :)

                                1 Reply Last reply Reply Quote 2
                                • RandyBonnetteR
                                  RandyBonnette
                                  last edited by RandyBonnette

                                  Hello guys,

                                  Here's where you can get more information about FV3-GFS new model: Significant information on the FV3-GFS https://www.emc.ncep.noaa.gov/users/meg/fv3gfs/official and select model (real-time): https://data1.gfdl.noaa.gov/fvGFS/fvGFS_products.php Or find the Pivotalweather portal. You can compare the data there too.

                                  B 1 Reply Last reply Reply Quote 0
                                  • B
                                    BillGIllian @RandyBonnette
                                    last edited by

                                    @RandyBonnette said in NOAA is about to make some big changes to its global weather model:

                                    guys,
                                    Here's where you can get more information about FV3-GFS new model: Significant information on the FV3-GFS https://www.emc.ncep.noaa.gov/users/meg/fv3gfs/website and select model (real-time): https://data1.gfdl.noaa.gov/fvGFS/fvGFS_products.php Or find the Pivotalweather portal. You can compare the data there too.

                                    Thanks for recommendations

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                                    • J
                                      JamesWilliam30 Banned
                                      last edited by

                                      This post is deleted!
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                                      • M
                                        masstexting Banned
                                        last edited by

                                        This post is deleted!
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                                        • J
                                          jamescrane
                                          last edited by

                                          Hey Randy thanks for your reply!

                                          1 Reply Last reply Reply Quote 0
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