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    Accumulated rainfall legend

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    • A
      atmosj | Premium last edited by

      Dear Windy,
      Is there a way to customise the accumulated rainfall legend?
      legend.png
      I would like more resolution between 40 mm and 1 m, especially when looking at 10 day accumulations when flooding is possible.
      eg: 0 ,1, 5, 10, 15, 25, 50, 100, 150, 200, 300, 400. I have added these extra lines to customise my colour scale, but the fixed displayed legend is not helpful.
      For example: legend2.png
      Regards
      AtmosJ

      idefix37 1 Reply Last reply Reply Quote 0
      • Yves70
        Yves70 Meteorologist | Premium last edited by Yves70

        @atmosj
        You can use the picker to check the exact rainfall accumulation at one location or an area just by moving the picker. Here I clicked in the zone where the legend is less accurate and I can read 147.5mm of rain in the next 10 days.

        D2EC489B-F910-4E74-B56E-C598FD5AA09B.jpeg

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

          @atmosj
          There is no way to customise the steps of the colour scale.
          But I don’t think that remembering 10 colours is so difficult. I have 13 for my own wind scale, and never use the legend.
          As @Yves70 said, at the end, the weather picker is the best tool to know the exact rain accumulation in the areas where your colours show high values.
          btw could you post a screenshot of a rain accumulation map with your customised colours. That should be interesting for Windy users.

          A 1 Reply Last reply Reply Quote 2
          • A
            atmosj @idefix37 | Premium last edited by

            @idefix37 said in Accumulated rainfall legend:

            @atmosj
            There is no way to customise the steps of the colour scale.
            But I don’t think that remembering 10 colours is so difficult. I have 13 for my own wind scale, and never use the legend.
            As @Yves70 said, at the end, the weather picker is the best tool to know the exact rain accumulation in the areas where your colours show high values.
            btw could you post a screenshot of a rain accumulation map with your customised colours. That should be interesting for Windy users.

            Many thanks to you and @Yves70 for your responses and apologies for the late reply. I'm new to the forum and did not think there had been any replies. I do use the weather picker all the time, but find the fixed legend scale inelegant.

            The legend sample I enclosed came from an accumulated rainfall forecast map provided by the Australian Bureau of Meteorology. They provide a 1-4, 5-8 and 1-8 day forecasts for our region using combined input from 5 models, including the ECMWF. They are very useful for identifying the potential for flooding from multiday rainfall systems like east coast lows and tropical cyclones.

            c2b7f176-da60-4a28-b162-1be0418b298f-image.png

            To see the maps and more information about the forecasts, see:
            http://www.bom.gov.au/fwo/IDYPME04/20210211_20210218/pme1to8.png

            My 1-5 day equivalent Windy version looks like this:
            test.jpeg

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

              @atmosj
              Your Rain accumulation map is excellent. If you want to get it even more similar to the map provided by BOM, let me see your customized color scale for Rain accumulation: Show a screenshot of your setting, like this one, to see how your scale steps are fitted.

              Capture d’écran 2021-02-11 à 15.15.12.png

              A 1 Reply Last reply Reply Quote 0
              • A
                atmosj @idefix37 | Premium last edited by

                @idefix37

                Thanks. Here are my settings. I just estimated the colours. The upper reds were a failed attempt to make the legend more helpful.

                3bd9c3e1-5a85-4026-bfa5-4759e5d0e64e-image.png

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

                  @atmosj
                  More than the fixed colour scale at bottom right corner of the screen, the fact that colours are smoothed/blended in Windy does not allow to see clearly the different colour ranges. You can overcome this problem and get a discrete (not smoothed) scale with only a small blending between each colour range:

                  Capture d’écran 2021-02-13 à 12.07.39.png

                  If you want to get the code in order to use directly this colour scale, just let me know. That's easier instead of adding lines.
                  To make a comparison with this colour scale and your own scale, you may use the new one with a different browser without logging in.

                  Personally I would use the 400 - 500mm red for 500 -1000mm and vice versa.

                  1 Reply Last reply Reply Quote 0
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