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    • K
      Kugluktuk last edited by

      Re: Wind speed values on map

      I live in a part of the world where weather reporting stations are widely scattered, often 200 or 300 miles apart. How does Windy determine the windspeed for a specific location, and how does Windy know that the winds speeds are markedly different for locations only 10 or 20 miles apart?

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

        @Kugluktuk
        Windspeed is not determined by Windy but by the model you use in the application : GFS, IFS (ECMWF),... Calculation of the speed and the gust is linked to the model

        1 Reply Last reply Reply Quote 3
        • K
          Kugluktuk last edited by

          Thank you. So the wind speed graphic on the map is determined by some mathematical algorithm? Not sure what parameters are used to define wind speeds and directions for two places only a few tens of miles apart, in the middle of nowhere.
          I thought maybe some fancy, doppler-equipped satellite could somehow read ground windspeeds from orbit. Wrong - I guess!
          Still not clear on the process.

          Korina idefix37 2 Replies Last reply Reply Quote 0
          • Korina
            Korina Administrator @Kugluktuk last edited by

            @Kugluktuk Hello, you can check the documentation for ECMWF model - https://www.ecmwf.int/en/forecasts/documentation-and-support/medium-range-forecasts

            Korina

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

              @Kugluktuk
              Obviously the weather prediction is not based on 2 weather stations observations. Find here how NWP works:

              https://en.m.wikipedia.org/wiki/Numerical_weather_prediction

              Initialization of weather models needs thousands of data and the main part of them are made by weather satellites.

              1 Reply Last reply Reply Quote 1
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