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    Description of weather overlays

    Frequently Asked Questions
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    • Gkikas LGPZ
      Gkikas LGPZ Moderator last edited by

      @ivo
      In the latest version of windytv there are more overlays (e.g. cloud tops, frz altitude, visibility).
      So, some more descriptions needed.

      ivo katesisco Marienka 3 Replies Last reply Reply Quote 10
      • ivo
        ivo Administrator @Gkikas LGPZ last edited by

        @meteo-GR Yep

        S 1 Reply Last reply Reply Quote 2
        • Eand
          Eand @ivo | Premium last edited by

          @ivo

          Could you explain difference between:

          • wawes
          • swell 1
          • swell 2
          • swell 3
          M 1 Reply Last reply Reply Quote 44
          • gjwolfswinkel
            gjwolfswinkel | Premium last edited by

            The freezing altitude layer, how does that work? I am often looking at ski weather and on those sites, the current freezing altitude (frostgrenze in German, vorstgrens in Dutch) is at around 3800 meters. Yet the 'freezing level' layer shows values of 2500 to even 1900 meters for those locations, even though the current temperatures there are much higher.

            Am I misinterpreting what the freezing altitude layer actually is or does? Or is the data faulty?

            Thanks!

            Obaidfarooq 1 Reply Last reply Reply Quote 2
            • S
              shappy4 @ivo last edited by

              @ivo

              Are the two numbers in the wind section - gusts and sustained winds?

              TZ 1 Reply Last reply Reply Quote 6
              • V
                vernab last edited by

                • how do I find the forecast for the storm Irma
                Gkikas LGPZ 1 Reply Last reply Reply Quote 1
                • Gkikas LGPZ
                  Gkikas LGPZ Moderator @vernab last edited by

                  @vernab
                  https://www.windy.com/?gust,18.469,-63.896,7,a:FFMFF

                  1 Reply Last reply Reply Quote 1
                  • TZ
                    TZ Administrator @shappy4 last edited by

                    @shappy4 The first number is wind direction and the second one is wind velocity (average value for last 3 hours).

                    1 Reply Last reply Reply Quote 3
                    • IgorXXXmirror
                      IgorXXXmirror last edited by

                      Hello. What does the height of 100 meters mean? Above sea level or terrain? The navigation satellite writes that I have a height of 160 meters above sea level (160 m msl).

                      IXMfoxPrower^_^;;

                      TZ 1 Reply Last reply Reply Quote 0
                      • TZ
                        TZ Administrator @IgorXXXmirror last edited by

                        @IgorXXXmirror Hi, 100m layer is above model terrain. Unfortunatelly it is very coarse terrain with 9km horizontal resolution.

                        IgorXXXmirror J A 3 Replies Last reply Reply Quote 2
                        • IgorXXXmirror
                          IgorXXXmirror @TZ last edited by

                          @TZ Thanks

                          IXMfoxPrower^_^;;

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

                            @ivo

                            When using wave overlay, I see a color key indicating wave height and also boxes with values in them with either- or~ before the value. These numbers never match the color key .

                            Please explain.

                            1 Reply Last reply Reply Quote 2
                            • Atalantia
                              Atalantia last edited by

                              What means the 330 before 64km/h? 0_1507996931412_WindyScreen.png

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

                                @Atalantia
                                wind direction 330 degrees (coming from NorthWest)

                                M 1 Reply Last reply Reply Quote 4
                                • jmds
                                  jmds last edited by

                                  @ivo said in Description of weather overlays:

                                  Rain rate:

                                  I cannot see RAIN RATE in the settings ....

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

                                    Is there an overview of the meteograms that Windy displays for the forecasts? I am not sure of what some of the background colors and charts mean.

                                    sonnigekerstin 1 Reply Last reply Reply Quote 9
                                    • sonnigekerstin
                                      sonnigekerstin @alecloudenback | Premium last edited by

                                      @alecloudenback Me neither. I was searching for a manual to find out about the meaning of the different colors,graphs,pictograms etc....

                                      edneff 1 Reply Last reply Reply Quote 11
                                      • J
                                        joalb @TZ last edited by

                                        @tz What height does surface refer to? There would technically be no wind at the surface, so it must be some standard height above the ground (whatever the common reading instrument height is). What is that height? (i.e. 2m, 10m, 20m?). I'd like to use the data to estimate wind shear at a given location and using surface (0m) is not valid.

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

                                          @joalb
                                          Surface wind refers to 10m above model's surface.
                                          Surface temperature refers to 2m.

                                          For ECMWF datasets, see https://www.ecmwf.int/en/forecasts/datasets/set-i
                                          For ICON, see chapter 6 (Global output fields) in
                                          "Database Reference Manual for ICON"
                                          https://www.dwd.de/SharedDocs/downloads/DE/modelldokumentationen/nwv/icon/icon_dbbeschr_aktuell.html

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

                                            .... or scroll on top of this page

                                            1 Reply Last reply Reply Quote 2
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