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    Description of weather overlays

    Frequently Asked Questions
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    • 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
                                • J
                                  jwh @ivo last edited by

                                  @ivo From Leilani Estates Big Island Hawaii: what is the source of SO2 data? Satellite only? Any way to include data from ground monitors such as: http://weather.hawaii.edu/vmap/hysplit/ ?

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

                                    @jwh
                                    For the source of SO2 data ....click ...
                                    0_1527573931458_69a4c7f2-385d-472b-a661-fe6d2ca57ea3-εικόνα.png

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

                                      @jwh
                                      https://community.windy.com/topic/5982/so2-actual-time-or-predicted

                                      1 Reply Last reply Reply Quote 0
                                      • IgorXXXmirror
                                        IgorXXXmirror last edited by

                                        What does it mean in lightning l / km ^ 2?

                                        IXMfoxPrower^_^;;

                                        Gkikas LGPZ 1 Reply Last reply Reply Quote 0
                                        • Gkikas LGPZ
                                          Gkikas LGPZ Moderator @IgorXXXmirror last edited by

                                          @igorxxxmirror
                                          lightnings per square kilometer.

                                          1 Reply Last reply Reply Quote 3
                                          • T
                                            TomSlavkovsky API developers last edited by

                                            @Gkikas-LGPZ @IgorXXXmirror There is a mistake pointed out by ECMWF - it should be flash/km2/day.

                                            idefix37 1 Reply Last reply Reply Quote 1
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