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    How to read Meteogram

    Frequently Asked Questions
    meteogram
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    • rjlukhurakhanR
      rjlukhurakhan @Korina
      last edited by

      @Korina said in How to read Meteogram:

      Here is a description of units in Meteogram

      Displayed temperature and dew point represents values 2m above the surface.

      framee 1.png

      Wind displays average wind speed 10m above the surface level.
      Wind gusts display values 10m above the surface in the last 3 hours.

      framee 2.png

      Shaded area symbolises temperature on the upper side and dew point on the lower side. Color matches with the values given, corresponds with the color scale.

      Temperature is close to the dew point = air is humid
      The difference between temp. and d.p. is bigger = air is dry
      Dew point and temp. are equal = relative humidity is 100% (fog)

      framee 4.png

      800h is short for 800hPa
      5km and 6400ft represent elevation both in meters and feet
      FL100 is short for Flight Level 10000ft
      framee 5.png

      Atmospheric pressure asl
      Some values of this curve are shown in the hPa line.

      framee 6.png

      Different colors of precipitations are explained in the Meteogram detail.

      Deep blue = rain
      Pink = convective rain
      Light blue = snow

      Grey clouds in Meteogram are calculated from relative humidity. It can be explained as a distribution of water in the atmosphere. The height in the Meteogram is in pressure levels. km/ft values are only rough estimation and they are AMSL.

      framee 7.png

      Q: What does this Grey Layer means?

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

        @rjlukhurakhan
        Clouds as calculated from relative humidity aloft.

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

          @Gkikas-LGPZ got it, thank you

          1 Reply Last reply Reply Quote 0
          • R
            raphipps1966 @Korina | Premium
            last edited by

            @Korina said in How to read Meteogram:

            Here is a description of units in Meteogram

            Displayed temperature and dew point represents values 2m above the surface.

            framee 1.png

            Wind displays average wind speed 10m above the surface level.
            Wind gusts display values 10m above the surface in the last 3 hours.

            framee 2.png

            Shaded area symbolises temperature on the upper side and dew point on the lower side. Color matches with the values given, corresponds with the color scale.

            Temperature is close to the dew point = air is humid
            The difference between temp. and d.p. is bigger = air is dry
            Dew point and temp. are equal = relative humidity is 100% (fog)

            framee 4.png

            800h is short for 800hPa
            5km and 6400ft represent elevation both in meters and feet
            FL100 is short for Flight Level 10000ft
            framee 5.png

            Atmospheric pressure asl
            Some values of this curve are shown in the hPa line.

            framee 6.png

            Different colors of precipitations are explained in the Meteogram detail.

            Deep blue = rain
            Pink = convective rain
            Light blue = snow

            Grey clouds in Meteogram are calculated from relative humidity. It can be explained as a distribution of water in the atmosphere. The height in the Meteogram is in pressure levels. km/ft values are only rough estimation and they are AMSL.

            framee 7.png

            I don't understand what the grey areas mean. Can someone explain please

            idefix37I 1 Reply Last reply Reply Quote 0
            • idefix37I
              idefix37 Sailor Moderator @raphipps1966
              last edited by

              @raphipps1966
              The grey areas mean clouds.

              R 1 Reply Last reply Reply Quote 0
              • R
                raphipps1966 @idefix37 | Premium
                last edited by

                @idefix37 But the cloud base today scattered at 2700 and Broken at 3700 at Lydd airport. There was no rain except a,drizzle at 13.00 UTC. Yet the Meteogram showed a dark band right at the bottom with 0.2 blue vertical line at 13.00 UTC. The 'band' was almost black from late morning until late afternoon

                idefix37I 1 Reply Last reply Reply Quote 0
                • idefix37I
                  idefix37 Sailor Moderator @raphipps1966
                  last edited by idefix37

                  @raphipps1966
                  The Meteogram is providing a forecast, not an observation.
                  Providing a screenshot would help.
                  Have you tried several models ?
                  Then this topic should clarify your question
                  https://community.windy.com/topic/10309/cloudbase-meteograms?_=1733352137019

                  1 Reply Last reply Reply Quote 0
                  • idefix37I idefix37 referenced this topic on
                  • T
                    Thierry04
                    last edited by

                    Hello, what is the color code for the temperature? Are the colors related to an average temperature for the chosen location?

                    Weather2004W 1 Reply Last reply Reply Quote 0
                    • Weather2004W
                      Weather2004 Meteorologist @Thierry04 | Premium
                      last edited by

                      @Thierry04 In terms for the color code for temps, the default one windy uses does not mean the average temp, but one scale used as a global average. We can change the temperature colors on the windy map. There's one scale I enjoy using and have used it for 5 years now. If you want to change your temperature colors, you could go on Windy, then press on the top right corner where it says "menu", then press settings, it's on the left of where it has 8 different things, then after that, scroll down to where it says "customize color scale", then after that, you should be able to change the scale to the desires you wish to have it on.

                      Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                      • Gkikas LGPZG
                        Gkikas LGPZ Moderator Meteorologist @Weather2004
                        last edited by

                        @Weather2004
                        https://community.windy.com/post/34280

                        1 Reply Last reply Reply Quote 0
                        • idefix37I idefix37 referenced this topic on
                        • 布 欧布
                          布 欧 @Korina
                          last edited by

                          @Korina said in How to read Meteogram:

                          @galtsev Hi, we do not offer globe yet, so it is not possible to view it.

                          hello,could i wanna asked a question?in the meteogram,for example,does 9am means time from 6am to 9am or 9am to 12am?which one is the correct answer?Therefore, the precipitation at 9 am shows that 5mm is the total precipitation from 6 amto 9 am or the total precipitation from 9 amto 12 am?Or the precipitation of the hour at 9 am?

                          THANKS A LOT!

                          Gkikas LGPZG 1 Reply Last reply Reply Quote 0
                          • Gkikas LGPZG
                            Gkikas LGPZ Moderator Meteorologist @布 欧
                            last edited by

                            @布-欧
                            The 3hr precipitation shown at 9
                            is the accumulated preci. from 6 to 9.

                            布 欧布 1 Reply Last reply Reply Quote 1
                            • 布 欧布
                              布 欧 @Gkikas LGPZ
                              last edited by

                              @Gkikas-LGPZ

                              ok,thanks!

                              If it's clear at 9am, does it mean that it's clear from 6am to 9am ? be grateful to you!

                              1 Reply Last reply Reply Quote 1
                              • M
                                Mhuala | Premium
                                last edited by

                                Hi! Can somebody tell me what this '8 cm' means in the rainfall forecast? I know there's no chance of 80 mm of rainfall today :b

                                acdb73d7-1602-4d8a-9e98-d79b12312e68-image.png

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

                                  @Mhuala
                                  8 cm of snow (equivalent to 8 mm rain).
                                  1000032356.jpg

                                  1 Reply Last reply Reply Quote 0
                                  • Yukitaka NishimuraY
                                    Yukitaka Nishimura @Korina | Premium
                                    last edited by

                                    @Korina
                                    I was using Windy but had some questions. This article cleared up all my doubts at once and will be very useful for my future mountain climbing. Thank you.

                                    1 Reply Last reply Reply Quote 1
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