Navigation

    Windy Community

    • Register
    • Login
    • Search
    • Unread
    • Categories
    • Groups
    • Go to windy.com

    Analysis charts

    General Discussion
    5
    15
    1438
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Korina
      Korina Administrator @Damir120505 last edited by

      @damir120505 The ECMWF model is updated every 12 hours (every 6 hours with Windy Premium). Each model has a different update times.

      Korina

      1 Reply Last reply Reply Quote 0
      • idefix37
        idefix37 Sailor Moderator @Damir120505 last edited by idefix37

        @damir120505
        Please show a screenshot ! You are not clear.
        Are you talking about time shown in the time line or in Meteogram?

        Gkikas LGPZ 1 Reply Last reply Reply Quote 1
        • D
          Damir120505 last edited by

          @idefix37, I'll show example on GFS. Last update - 00 UTC. First available forecast is for 01 UTC (+001). But I need chart for 00 UTC hour (+000 or Analysis).
          c1c3b2ba-21e8-4ab5-8138-9a45f7ef2790-image.png

          Korina 1 Reply Last reply Reply Quote 0
          • Gkikas LGPZ
            Gkikas LGPZ Moderator @idefix37 last edited by

            @idefix37
            I think damir talks about initial data for every run of the model.

            1 Reply Last reply Reply Quote 1
            • Korina
              Korina Administrator @Damir120505 last edited by

              @damir120505 The forecast data are valid until the next update time (or ref time). This is just how the GFS or other models work.

              Korina

              D 1 Reply Last reply Reply Quote 0
              • D
                Damir120505 @Korina last edited by

                @korina, any model have analysis map. If model updated in 00 UTC it has forecast for +001 and analysis. But analysis ISN'T forecast of previous model run. For example, init time and valid time are same on this picture. Unfortunately, Windy has no analysis map.
                a0d1d58a-017b-4383-8062-8ab5c3d0097b-image.png

                Korina 1 Reply Last reply Reply Quote 0
                • Korina
                  Korina Administrator @Damir120505 last edited by

                  @damir120505 You can learn more about reference and update time here -

                  https://community.windy.com/topic/11361/a-difference-between-reference-time-and-update-time

                  Korina

                  D 1 Reply Last reply Reply Quote 0
                  • D
                    Damir120505 @Korina last edited by

                    @korina, I knew the information from the topic before.
                    Indeed, before starting to calculate weather forecasts for the future, the model analyzes the weather at 00 and 12 UTC and receives a "map" for this time. This time is called analysis or +000 hours. But the first available term in Windy is an hour or 3 after the analysis (+001 or +003 hour).

                    idefix37 1 Reply Last reply Reply Quote 0
                    • idefix37
                      idefix37 Sailor Moderator @Damir120505 last edited by idefix37

                      @damir120505
                      For ECMWF Analysis is not disseminated together with Forecasts.
                      https://www.ecmwf.int/en/forecasts/documentation-and-support/data-delivery/dissemination-schedule

                      May be Windy chose not to acquire the Analysis but only the Forecasts.

                      Same for GFS
                      https://www.nco.ncep.noaa.gov/pmb/nwprod/prodstat/

                      Yves70 1 Reply Last reply Reply Quote 2
                      • Yves70
                        Yves70 Meteorologist @idefix37 | Premium last edited by

                        Yes, @idefix37 is right, there is a delay between analysis and forecast, as described in the link proposed by @idefix37. This should be the case for other models.
                        Price to acquire data and analysis can explain that people go for the forecast

                        1 Reply Last reply Reply Quote 2
                        • First post
                          Last post
                        Windyty, S.E. - all rights reserved. Powered by excellent NodeBB
                        NodeBB & contributors, OSM & contributors, HERE maps
                        Terms and Conditions     Privacy Policy