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    Tide Forecast on Windy

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    • ivo
      ivo Administrator last edited by Simona Polackova

      @kekert is a snowkiter and has never been on a sailing boat, but as a mathematician he gathered some harmonics files, and so tide forecast on Windy is now a reality.

      Tides are implemented as points on the map, so just click on the boat icon and there you are!

      We have tides only for the USA, some parts of the Caribbean, Netherlands, the UK, Australia, NZ, Japan and Canada and some other locations.

      The icon symbol is the actual tide forecast for the given time โ€“ so move the timeline and magic will happen!

      To open a tide station, just click on the boat icon:

      _left

      _left


      BEWARE: Tides can be forecasted only at certain tide stations (where measurement has been made). Some fraudulent mobile apps try to convince you that there is some universal formula to forecast tides for any location. They are liars.


      Tide stations wanted! We would love to increase the number of tide stations on Windy. There is a project to create free creative commons database of harmonic files. Details here: https://community.windy.com/topic/4893/contributors-wanted-2-creative-commons-database-for-free-tide-forecast


      A picture of @kekert:

      _center_shadow


      Blog post: https://blog.windy.com/tide-forecast-on-windy


      S D S S C 8 Replies Last reply Reply Quote 18
      • mrandall
        mrandall Sailor | Premium last edited by

        Great Idea. As of March 3, I see lots of little boat icons that correspond with NZ tide stations.
        But I see no data when I click on any particular tide station: no tide table, no harmonic graph, and no current info either.

        Boat icon is the same as was used for currents. Will these now be displayed together? Or are currents to be abandonded?

        In Whangarei NZ.

        ivo 1 Reply Last reply Reply Quote 1
        • Susanne-Marie
          Susanne-Marie last edited by

          Super, perfekt ๐Ÿ‘๐Ÿ‘๐Ÿ‘

          1 Reply Last reply Reply Quote 2
          • renelis
            renelis | Premium last edited by

            What does 5.3 at 13:45 in the popup information mean ?

            Tomber42 1 Reply Last reply Reply Quote 3
            • mrandall
              mrandall Sailor | Premium last edited by

              Okay, now I can see data for NZ stations in the right hand side bar. I don't see the "E" or "F" symbols for Ebb or Flood current at that station. I don't see the up or down arrows for high or low tides at that station. I see the boat icons only. I do see the symbols at stations along the US west coast, e.g. Columbia River entrance. Thank you.

              ivo 1 Reply Last reply Reply Quote 0
              • ivo
                ivo Administrator @mrandall last edited by

                @mrandall seems like a bug. Send a screenshot pls

                1 Reply Last reply Reply Quote 1
                • ivo
                  ivo Administrator @mrandall last edited by

                  @mrandall This must be bug. I see NZ stations all right. Please investigate.

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

                    Loving it.. But what I really want to see is a 30+ day graph of tide height with sun/moon rise/set times.
                    Lots of usages including clamming, photography, shorebird watching.

                    Keep up the good work!

                    1 Reply Last reply Reply Quote 7
                    • Tomber42
                      Tomber42 Moderator @renelis last edited by Tomber42

                      @renelis said in Tide Forecast on Windy!!!!:

                      What does 5.3 at 13:45 in the popup information mean ?

                      (Date) 5.3. At 13.45(h)

                      @ivo to make it clear maybe would be better to write
                      5.3.18 at 13.45h

                      Greetings from Tomber

                      S 1 Reply Last reply Reply Quote 2
                      • D
                        dfog last edited by

                        Love it!
                        Particularly when you play the tide timeline overlaid on the wave forecast map.
                        Very useful during the storm surge we were having this weekend on the east coast of Canada and the US eastern seaboard.

                        1 Reply Last reply Reply Quote 3
                        • ื“
                          ื“ื•ื“ ืกืœื™ืง last edited by

                          i love it keep up the good work

                          1 Reply Last reply Reply Quote 1
                          • Paris-Brest
                            Paris-Brest | Premium last edited by

                            This is a good news to read that you're providing tidal information. First of all it is not forecast tides but predicted tides as it is based on harmonic calculation. Forecast tides would require observations to recalculate the predictions. Also, you are providing tide info for non tidal areas, upstream of Trois-Rivieres in Canada. There are waterlevel stations going up to the Great lakes. I also noted a bug for some stations as the information appear twice for low and high tides with slight differences (Rimouski). Thank you for considering my comments as Windy have been very innovative.![text alternatif](0_1520514969179_Screenshot_20180308-075925.png url de l'image)

                            ivo kekert 2 Replies Last reply Reply Quote 1
                            • Paris-Brest
                              Paris-Brest | Premium last edited by

                              As for the date, a more conventional way would be more appropriate to avoid confusion with tide value in meter.

                              1 Reply Last reply Reply Quote 3
                              • Paris-Brest
                                Paris-Brest | Premium last edited by

                                For Canada, you could use the following web services to provide observations, predictions and forecast
                                http://www.tides.gc.ca/eng/info/WebServicesWLD

                                1 Reply Last reply Reply Quote 2
                                • Ingmar
                                  Ingmar last edited by

                                  Tried it in the betaversion, loved it , thnx for adding it.

                                  1 Reply Last reply Reply Quote 1
                                  • ivo
                                    ivo Administrator @Paris-Brest last edited by ivo

                                    @paris-brest Yep we do confirm a bug a working on a fix

                                    1 Reply Last reply Reply Quote 0
                                    • kekert
                                      kekert Global Moderator @Paris-Brest last edited by

                                      @paris-brest thanks for pointing it out, should be fixed now

                                      1 Reply Last reply Reply Quote 1
                                      • D
                                        drice928 last edited by

                                        Love the ability to move through tide progression. Unique and helpful. Would like to be able to have tide stations in favorites if possible. Best weather app out there!

                                        1 Reply Last reply Reply Quote 1
                                        • T
                                          timber2 last edited by

                                          I have now logged more than 66000M on my 7m40 long boat covering the British Iles, Ireland and The Netherlands round past Spain and on to Italy. Passage making or going up river till the boat grounds (at 1m) I know what I want from tide information. A weeks coefficients and H and L heights and times for the expected area are copied out on a formica board and kept at the chart table for reference at all times even when the boat is ashore for maintenance.
                                          You have made a good start -But

                                          1. All the times should be dated unambiguously (d/m or m/d).Try a line for date as punctuation between the data blocks.
                                          2. Even the British Admiralty now use metres for depth. Remove the ft. It is just clutter and as such can only be a source of error or confusion.
                                          3. Remove the reference to the previous or next tide which is just more clutter ( and wrong see 6)). The time NOW appears at the top of the screen on my iPad. I can do the rest.
                                          4. Cut the clutter of words. HW and LW are well understood and not even needed if the data is decluttered.
                                          5. Add Tidal Coefficients. The British shun them because they are foreign but they are one of the most usefull tools available when working depths and calculating tidal stream rates.
                                          6. In the data box under Type: add the data source.
                                            On the 12th March
                                            Your values
                                            LW 0739 2.48m HW 1401 4.22m LW 2024 2.39m
                                            UK Hydrographic Office
                                            0114 4.2 0731 2.3 1411 4.1 2007 2.3
                                            SHOM
                                            HW 0121 4.19 LW 0746 2.32 HW 1407 4.15 LW 2025 2.24
                                            National Tidal and Sea Level Facility
                                            0105 4.29m 0750 2.42m 1357 4.23m 2029 2.43m
                                            tide-forecast
                                            0138AM 4.17m 0812AM 2.47m 0219PM 4.12m 0843PM 2.43m (Yes I know)
                                            Tides for fishing
                                            0111 4.3m 0737 2.5m 1400 4.3m 2022 2.4m
                                            Mobile Geographics version 1
                                            0155PM 4.00m 0836PM 2.41m
                                            Mobile Geographics version 2
                                            0220PM 4.12m 0843PM 2.43m
                                            On the UK E Coast be ready a comfortable half hour before any time and watch. Rubish in a tidal stream can reverse direction without loosing speed at tide turn. Heights depend heavily on North Sea conditions and sometimes match the tabulated values sometimes. Just listen to the Thames Navigation radio for the river pilots.

                                          Keep it simple.Just provide the numbers with their source and leave the skipper to do what skippers do.

                                          idefix37 planetjim 2 Replies Last reply Reply Quote 7
                                          • idefix37
                                            idefix37 Sailor Moderator @timber2 last edited by

                                            @timber2
                                            Good advice Mate ! Most are for Windy but some are only for skippers.
                                            OK to remove the ft, but may be this unit is used in USA?
                                            HW and LW is fine.
                                            Strange to me that you like tidal coefficients. Are they available in UK? Iโ€™ve never see them used in this country.
                                            At # 6, I donโ€™t understand the examples you give, is it just to show that everyone does not display tides in the same way?

                                            JRep65 1jollymon 2 Replies Last reply Reply Quote 1
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