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    Windy Launches Premium 15-Day Forecast for ECMWF Model using AIFS technology

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    • Polina NozdrinaP
      Polina Nozdrina | Premium
      last edited by David Polášek

      We're excited to unveil our latest feature: ECMWF (European Centre for Medium-Range Weather Forecasts) has developed its own data-driven forecast model called the Artificial Intelligence/Integrated Forecasting System (AIFS)!

      • Extended Forecast: Get a detailed weather outlook for the next 15 days, helping you plan your activities and trips with greater accuracy. Simply go to the detailed forecast of any location with the ECMWF model.

      • Global Coverage: Access precise weather forecasts for any location in the world. Whether you're checking the weather for your hometown or the destination of your next trip, Windy.com has you covered.

      • Detailed Insights: Our 15-day forecast provides in-depth information, including temperature trends, precipitation probabilities, wind speeds, and more.

      However, looking 15 days ahead into the weather is risky. This is why we recommend using this long forecast as a trend-watching tool rather than planning your activities for specific days based on this forecast solely.
      alt text

      🤖 How does AIFS work?

      These systems use advanced machine learning models to analyze current and past weather patterns, providing accurate and detailed forecasts. AIFS employs ensemble forecasting for reliability, continuously learns and updates its models, and delivers real-time updates. The result is increased forecast accuracy, early warnings for severe weather, personalized predictions, and improved decision-making across various sectors, significantly enhancing our ability to respond to weather changes.

      🔗 How to Access the 15-Day Forecast?

      Upgrade to Premium: If you're not already a Premium user, head over to this link to purchase Premium
      Select Your Location: In Windy, click on any location in the world.
      View the Forecast: Enjoy a comprehensive 15-day weather forecast provided by ECMWF and AIFS.

      Feel free to share your thoughts and feedback in the comments below.

      S panos6P V 浙 4 Replies Last reply Reply Quote 1001
      • Polina NozdrinaP Polina Nozdrina moved this topic from Windy Internal on
      • S
        stephenm00 @Polina Nozdrina | Premium
        last edited by

        @Polina-Nozdrina Why is the AIFS model limited to only ~7+ days out?

        idefix37I 1 Reply Last reply Reply Quote 3
        • idefix37I
          idefix37 Sailor Moderator @stephenm00
          last edited by idefix37

          @stephenm00
          AIFS forecast is displayed in Windy as an extension (+ 5 days) of IFS, the ECMWF model used by Windy.
          AIFS has a 0.25° resolution while the one of IFS is 0.1° (9km). So I guess there is no real advantage for using AIFS for the first 10 days.

          1 Reply Last reply Reply Quote 7
          • LMW 1L
            LMW 1 | Premium
            last edited by LMW 1

            Good day.
            Love Windy and it's my go-to for long range forecasts. I live on a small island in the Caribbean and it's especially important to know what's coming at us.
            The new 15 day forecast is great. Thank you

            1 Reply Last reply Reply Quote 2
            • G
              gavin-swonnell | Premium
              last edited by

              Dear Windy,

              I am a premium member, but the ECMWF forecast is still only 10 days on my phone app.

              How can I access the 15 day version?

              Regards,
              Gavin

              idefix37I D 2 Replies Last reply Reply Quote 3
              • laurent corkL
                laurent cork | Premium
                last edited by

                Thanks windy … Happy to get this new feature but 15 days AIFS not showing on both iPhone and iPad

                idefix37I 1 Reply Last reply Reply Quote 0
                • idefix37I
                  idefix37 Sailor Moderator @laurent cork
                  last edited by idefix37

                  @laurent-cork

                  You get the 15 days only in point forecast table, not in the map.
                  Here shown on iPad

                  91438286-CC03-4BB7-94FE-F2E262CC050D.jpeg

                  laurent corkL 2 Replies Last reply Reply Quote 0
                  • laurent corkL
                    laurent cork | Premium
                    last edited by

                    Seems the 15 days forecast is not showing on the bottom ruler hence you need to pick a specific location to get the AIFS 15 days. Would be nice to get also the 15 days on the opening screen to get a general overview of a larger area/region. I’m sailing and this would help to assess and take decision on the next passage.
                    Thanks Windy Team

                    1 Reply Last reply Reply Quote 0
                    • laurent corkL
                      laurent cork @idefix37 | Premium
                      last edited by

                      Thanks Gavin,

                      1 Reply Last reply Reply Quote 0
                      • laurent corkL
                        laurent cork @idefix37 | Premium
                        last edited by

                        @idefix37 Thanks but still … would be ‘a nice have’

                        1 Reply Last reply Reply Quote 0
                        • idefix37I
                          idefix37 Sailor Moderator @gavin-swonnell
                          last edited by idefix37

                          @gavin-swonnell

                          AIFS extension to the standard 10 days is displayed in the point forecast table.
                          Here shown in iPhone in landscape mode

                          IMG_1934.jpeg

                          1 Reply Last reply Reply Quote 1
                          • panos6P
                            panos6 @Polina Nozdrina | Premium
                            last edited by

                            @Polina-Nozdrina Ever since I subscribed to windy, 4 years ago, I've been enjoying it at work. Most of the time it shows correct reports. Keep it up, we need Have fun dear.

                            1 Reply Last reply Reply Quote 2
                            • Christoph GrossC
                              Christoph Gross
                              last edited by

                              15 days ahead plus minus all possibilities we have, that is great to think about specifically to learn a lot about Life on Earth, thank you all ! And by the way the artificial intelligence for support in it.

                              1 Reply Last reply Reply Quote 0
                              • V
                                Victor_windy @Polina Nozdrina | Premium
                                last edited by

                                @Polina-Nozdrina Thanks for this nice new feature :)
                                However it seems that my phone is not wide enough as the days are not displayed in the top chart which makes it a bit useless. They do appear when I switch to landscape view though. I guess you are aware of this UI issue.
                                1000220154.jpg

                                SutyS 1 Reply Last reply Reply Quote 0
                                • 浙
                                  浙江省应急 @Polina Nozdrina | Premium
                                  last edited by

                                  @Polina-Nozdrina
                                  56f9ee36-db9f-4756-89ed-1231824b3cef-image.png
                                  I can't make the payment smoothly. I've never used such a crappy payment system.

                                  SutyS 1 Reply Last reply Reply Quote 0
                                  • SutyS
                                    Suty Administrator @Victor_windy
                                    last edited by

                                    @Victor_windy Hello, could you please provide more info about your device?

                                    V 1 Reply Last reply Reply Quote 0
                                    • SutyS
                                      Suty Administrator @浙江省应急
                                      last edited by

                                      @浙江省应急 HI, I see you were successful at the end and your account is a Premium one. Do you still need any help?

                                      1 Reply Last reply Reply Quote 1
                                      • V
                                        Victor_windy @Suty | Premium
                                        last edited by

                                        Hi @Suty, it's a Samsung Galaxy S20 5G (SM-G981U1)

                                        1 Reply Last reply Reply Quote 0
                                        • D
                                          davikie @gavin-swonnell | Premium
                                          last edited by

                                          @gavin-swonnell yeah! Mine too!

                                          1 Reply Last reply Reply Quote 0
                                          • K
                                            Kevinousdigian | Premium
                                            last edited by

                                            Is their any data published on the accuracy of this model for forecasting wind, sun, rain, temperatures out to 15 days?

                                            I find your description of the model contradictory. At the beginning it's touting using this model plan for future activities with more accuracy and at the end it's stating forecasting out 15 days is risky and caution should used for planning activities around it. Would be good to know the positive predictive value when it forecasts a windy day on a certain body of water 15 days out (ie what % of the time that it predicts a windy day does it turn out to be correct) and likewise what is the sensitivity (what percent of windy days does it truly pickup 15 days out).

                                            We recognize predicting weather/wind is challenging but it would be helpful to know if the accuracy is a flip of the coin (50%) or more like 80-90%.
                                            Thanks for all you have done with this great app!

                                            1 Reply Last reply Reply Quote 1
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