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    Cloud Base Information

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    • T
      takumhara last edited by

      Good Day,
      Just wanted to clarify whether your cloud base information is above ground level or above mean sea level??
      Best Regards.

      csabatatar 1 Reply Last reply Reply Quote 1
      • csabatatar
        csabatatar Moderator Pilot @takumhara last edited by

        @takumhara
        Windy changed it from cloud base to ceiling, but it is running under the same name on Windy. So the ceiling means > 50% of sky covered by clouds, in aviation it is higher than 4 octas, so it can be BKN = Broken or OVC = Overcast, where BKN = 5-7 octas, OVC = 8/8 octas fully covered.

        And to answer your qestion, this parameter gives the height of ceiling in meters (m) or feet (ft) above the level of the model (ECMWF) orography, so it is AGL.

        Read the corresponding article of Ceiling:
        https://confluence.ecmwf.int//display/FCST/43r1+new+parameters%3A+Ceiling

        But be aware of it, because of the ECMWF model has a 9km resolution, so it's sampling the terrain with 9 km steps. If you are planning around mountainous areas, you can't rely on it, do not use it for planning in such areas.

        T 1 Reply Last reply Reply Quote 1
        • Gabou971
          Gabou971 Moderator last edited by

          You can also read this post:

          https://community.windy.com/topic/3643/clouds-bases

          T 1 Reply Last reply Reply Quote 1
          • T
            takumhara @csabatatar last edited by

            @csabatatar Thanks mate, much appreciated!

            1 Reply Last reply Reply Quote 0
            • T
              takumhara @Gabou971 last edited by

              @Gabou971 Thank you very much!

              1 Reply Last reply Reply Quote 0
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