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    Description of weather overlays

    Frequently Asked Questions
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    • TZT
      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
      • IgorXXXmirrorI
        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^_^;;

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

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

          IgorXXXmirrorI J alive OranA 3 Replies Last reply Reply Quote 2
          • IgorXXXmirrorI
            IgorXXXmirror @TZ
            last edited by

            @TZ Thanks

            IXMfoxPrower^_^;;

            1 Reply Last reply Reply Quote 1
            • RaniR
              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
              • AtalantiaA
                Atalantia
                last edited by

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

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

                  @Atalantia
                  wind direction 330 degrees (coming from NorthWest)

                  M 1 Reply Last reply Reply Quote 4
                  • jmdsJ
                    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
                    • alecloudenbackA
                      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.

                      sonnigekerstinS 1 Reply Last reply Reply Quote 10
                      • sonnigekerstinS
                        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....

                        edneffE 1 Reply Last reply Reply Quote 12
                        • 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 LGPZG 1 Reply Last reply Reply Quote 1
                          • Gkikas LGPZG
                            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 LGPZG 1 Reply Last reply Reply Quote 3
                            • Gkikas LGPZG
                              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 LGPZG 2 Replies Last reply Reply Quote 1
                                • Gkikas LGPZG
                                  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 LGPZG
                                    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
                                    • IgorXXXmirrorI
                                      IgorXXXmirror
                                      last edited by

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

                                      IXMfoxPrower^_^;;

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

                                        @igorxxxmirror
                                        lightnings per square kilometer.

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

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

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

                                            @tomslavkovsky
                                            If the unit is flash/km2/day, why does the map changes every 3 hours? Is it a sliding average over 24 hours? Looking to the way how thunderstorms move on the map every 3 hours, it seems surprising

                                            Gkikas LGPZG 1 Reply Last reply Reply Quote 1
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