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    How to read Meteogram

    Frequently Asked Questions
    meteogram
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    • Yves70
      Yves70 Meteorologist @Korina | Premium last edited by

      @korina
      Very nice summary Korina. Will be useful for a lot of users !

      1 Reply Last reply Reply Quote 8
      • Gkikas LGPZ
        Gkikas LGPZ Moderator @Korina last edited by Gkikas LGPZ

        @korina
        Please add explanation for the shadows of gray.
        I think represent relative humidity aloft (not clouds). Isn't it?

        A 1 Reply Last reply Reply Quote 8
        • H
          hgk209 | Premium last edited by hgk209

          Thanks for the descrition. I have a question about the gray shades (relative humidity?) on the bottom of the meteogram. It appears that there are 7 shades of gray. How do the shades of gray and the relative humidity correspond (Whitch shade of gray represents what level of humidity)?
          Thanks.

          1 Reply Last reply Reply Quote 5
          • Yves70
            Yves70 Meteorologist | Premium last edited by

            @hgk209
            First of all, we should get the confirmation about the exact meaning of the shades of grey. Is it humidity level or cloud cover ? High level of humidity doesn’t necessary mean clouds

            @Korina
            @ivo
            Could you let us know ? Thanks

            C 1 Reply Last reply Reply Quote 5
            • idefix37
              idefix37 Sailor Moderator last edited by

              Please find additional information about Meteogram and cloudiness:

              https://community.windy.com/topic/10309/cloudbase-meteograms?_=1608981618271

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

                @idefix37
                Thanks, this is clear now. Grey shades in the meteogram are linked to relative humidity, not cloud cover

                Yves70 chzhh 2 Replies Last reply Reply Quote 2
                • Yves70
                  Yves70 Meteorologist @Yves70 | Premium last edited by Yves70

                  Having said that, relative humidity is a great tool to better understand, very quickly, the situation and even if you cannot completely linked cloud cover and relative humidity, they are both linked in a way.
                  Cloud maps are still necessary to assess the real cloud cover, knowing that in any case, those cloud maps are not super accurate,...
                  Sounding can complete the analysis

                  1 Reply Last reply Reply Quote 2
                  • M
                    marketingzet last edited by

                    thanks for sharing..

                    stranger chat

                    1 Reply Last reply Reply Quote 1
                    • crazycats
                      crazycats last edited by

                      That's a very helpful guide for a beginner like me with the app. Now some noob questions -
                      a. I didn't quite get the Shaded area description
                      b. how do I check that there's only high clouds at a site and say in the direction of sun no low/middle clouds
                      c. how do I check for cloud inversion from a hilltop in a valley. sometimes its also referred as low clouds / fogs but following that had me stuck in thick fog on hills

                      thanks so much in advance.

                      kind regards

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

                        @crazycats
                        Hi,
                        a. Which shaded area are you referring? In Meteogram the explanation is given in posts here above.
                        b. Check High, Medium and Low clouds layers. If necessary see More layers... The direction of the sun is given by a plugin only available on website. Menu > Install plugins > Sun position
                        c. You probably mean in case of temperature inversion, which brings a cloud / fog layer below the inversion. You can check that by using the Sounding feature. Right click on mouse.

                        Capture d’écran 2021-01-09 à 09.08.37.png

                        • Temperature inversion when the temperature (red curve) is increasing with altitude instead of decreasing.
                        • Clouds when temperature and dew point are close together (red and blue curves)

                        Note that the weather model can only show this phenomenon at large scale but not in local conditions like in a mountain valley.

                        1 Reply Last reply Reply Quote 4
                        • G
                          galtsev last edited by

                          hello, how to enable the map "globe" ??

                          Korina 1 Reply Last reply Reply Quote 0
                          • Korina
                            Korina Administrator @galtsev last edited by

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

                            Korina

                            1 Reply Last reply Reply Quote 0
                            • Z
                              zzzzzzxxx last edited by

                              Где тут можно вопрос задать ??? Не могу найти

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

                                @zzzzzzxxx
                                What is the subject of your question ?

                                Z 1 Reply Last reply Reply Quote 0
                                • Z
                                  zzzzzzxxx @Yves70 last edited by

                                  Почему высота над уровнем моря у меня на Туристической карте уже не показывает?

                                  1 Reply Last reply Reply Quote 0
                                  • C
                                    Cougar83 @Yves70 last edited by

                                    @yves70 said in How to read Meteogram:

                                    @hgk209
                                    First of all, we should get the confirmation about the exact meaning of the shades of grey. Is it humidity level or cloud cover ? High level of humidity doesn’t necessary mean clouds

                                    @Korina
                                    @ivo
                                    Could you let us know ? Thanks

                                    Yves70 1 Reply Last reply Reply Quote 1
                                    • Yves70
                                      Yves70 Meteorologist @Cougar83 | Premium last edited by

                                      @cougar83
                                      Grey shades in the meteogram are linked to relative humidity, not cloud cover

                                      1 Reply Last reply Reply Quote 2
                                      • A
                                        angus 4 @Gkikas LGPZ | Premium last edited by

                                        @gkikas-lgpz

                                        1 Reply Last reply Reply Quote 0
                                        • F
                                          fhamilton36 last edited by

                                          That's great. What if I want to plan sailing from the Chesapeake to the Grenadines, a few months in advance. Is there historical data?

                                          idefix37 1 Reply Last reply Reply Quote 0
                                          • idefix37
                                            idefix37 Sailor Moderator @fhamilton36 last edited by idefix37

                                            @fhamilton36
                                            No Windy does not provide historical data.
                                            Better to use the Pilot Charts than verifying days after days what was the weather during the last 10 or 20 years:
                                            https://community.windy.com/topic/9788/historical-wind-data?_=1619461576536

                                            D 1 Reply Last reply Reply Quote 2
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