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    Upper-Level Heights

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    • KL13470
      KL13470 | Premium last edited by

      Are there plans to add upper-level height overlays? Such as the 500mb decameter heights. I know a lot of times forecasters use the 528 decameter line to get a rough idea of snow potential, so this might be a useful tool to have, heights with a slider bar to adjust the level of the atmosphere you want to look at.

      Gkikas LGPZ idefix37 2 Replies Last reply Reply Quote 0
      • Gkikas LGPZ
        Gkikas LGPZ Moderator @KL13470 last edited by

        @kl13470
        With the "height slider", select 500hPa,
        then "More layers..."
        4fca75bb-26f6-4004-96c7-9fa7a83fdc25-εικόνα.png

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

          .......
          scroll down to "Display isolines" and click "Geopot. height"
          870f21fe-5b6d-4a7b-be13-de7aa029b0b7-εικόνα.png

          Gkikas LGPZ KL13470 2 Replies Last reply Reply Quote 1
          • idefix37
            idefix37 Sailor Moderator @KL13470 last edited by

            @kl13470
            May I add that Windy shows Geopotential heights in meters whereas they are usually shown in decameters (dam).
            As shown above by @Gkikas-LGPZ, the 528dam is the 5280m isoline.

            1 Reply Last reply Reply Quote 2
            • Gkikas LGPZ
              Gkikas LGPZ Moderator @Gkikas LGPZ last edited by Gkikas LGPZ

              @KL13470
              Yes, back in the good old times when (we) forecasters
              had only a surface and a 500 mbs forecast chart,
              we use the 528 isoline to forecast snow
              (or we use some other practical rules)
              but now, thanks to weather models, we have snow forecast maps.
              https://www.windy.com/-Show---add-more-layers/overlays?500h,snowAccu,next3d,47.249,-70.225,4
              Weather models forecast snow by using a lot of parameters,

              P.S. if you have time, read this https://community.windy.com/topic/7239/snow-forecast-using-sounding-forecast?=1642089339722
              and this
              https://community.windy.com/topic/4513/what-elevation-for-spot-forecasts/9?
              =1642089339730

              idefix37 1 Reply Last reply Reply Quote 1
              • KL13470
                KL13470 @Gkikas LGPZ | Premium last edited by

                @gkikas-lgpz Thank you so much! I've been using Windy for years now and never even noticed this function

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

                  @gkikas-lgpz
                  Hi, it is a pity that Windy never made the temperature correction that you were proposing in your link.
                  It would bring a better accuracy for temperature and rain/snow limit in mountains.

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

                    @idefix37
                    I think you talk about
                    https://community.windy.com/topic/4513/what-elevation-for-spot-forecasts/8?=1642077914502
                    and
                    https://community.windy.com/topic/3643/clouds-bases/10?
                    =1642089339741

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

                      @gkikas-lgpz
                      Yes you are right, these are the useful links.

                      1 Reply Last reply Reply Quote 1
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