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    Isobars in satellite images and RADAR images

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    • Lordofweather
      Lordofweather | Premium last edited by

      Hi!
      Why is it not possible to see the isobars in satellite images or radar images? This possibility is of great interest for those who are learning meteorology.
      Best regards

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

        @lordofweather
        This is possible, you just need to tick ‘Pressure isolines’

        E4286A1C-E6D0-44AE-907B-CB823FC5BB2F.jpeg

        22CBED60-96A8-4AC5-9EC6-B888C520B38A.jpeg

        vsinceac 1 Reply Last reply Reply Quote 0
        • vsinceac
          vsinceac @idefix37 last edited by vsinceac

          Yes, but there is a catch: when playing animations on satellite or radar data layers, the atmospheric pressure isolines data layer remains the same (maybe based on NOW model forecast validity).

          Thus overlay forecast of pressure isolines frozen at NOW over observations data layers available in [NOW - 12h] is useless (as already discussed in this thread)

          ¯\_(ツ)_/¯

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

            @vsinceac

            As a similar case, Reported wind and Reported temperature should not been displayed at same time with all forecast layers. They show crazy values if the timeline is set 12 hours ahead and more... Windy needs a bit of understanding and training.

            Korina 1 Reply Last reply Reply Quote 0
            • Korina
              Korina Administrator @idefix37 last edited by Korina

              @idefix37 Hello, what do you mean by this please? Stations show the current measured values.

              @vsinceac The isolines are for now, since we do not show past weather conditions.

              Korina

              idefix37 vsinceac 2 Replies Last reply Reply Quote 0
              • idefix37
                idefix37 Sailor Moderator @Korina last edited by idefix37

                @korina
                Yes, the weather stations show the current measured values (observations). When you select them with any forecast layer (Wind, Rain, Pressure...) there is automatically an 'inconsistency' when you look at predicted weather for the next 2 or 3 days. Reported values are at day 0 and forecast data at days 2 or 3. They no longer match.
                For me it's not at all a problem.
                It is about the same with Radar or Satellite (observations) with Pressure isolines (forecast). If a user wants to see the 12 h Radar loop, he must understand that the isolines will not match the radar images (excepted the latest ones of the loop).

                1 Reply Last reply Reply Quote 1
                • vsinceac
                  vsinceac @Korina last edited by vsinceac

                  > The isolines are for now, since we do not show past weather conditions.

                  Nevertheless data layers for satellite, radar, etc. are well "past weather conditions"...

                  ¯\_(ツ)_/¯

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

                    @vsinceac Yes, but they are real-time data. Isolines are still forecast.

                    Korina

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

                      What I meant is clearly shown on screenshot below; in this case study, pressure and satellite images are not contemporary (12 h of difference!) and should not be displayed together:

                      • satellite layer: real time observation, validity = (NOW-12h)
                      • pressure data layer: forecast model, validity= NOW (rounded to hours I guess)

                      62a3cace-6c80-4310-b6ca-06a4bfcaf054-image.png

                      ¯\_(ツ)_/¯

                      1 Reply Last reply Reply Quote 0
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