Windy launches Route Planner

  • Sailor

    Very good. A great addition to the distance planner.
    As a sailor, I would prefer wind direction to default to absolute, or north up. But not a priority, once I know how to make setting.
    I like the default forecast all along the route defined for one specific moment that I choose on timeline. Moving forecast along the route depends on accurate guess of vmg, which of course changes with wind speed and sea state and accurate boat polars. Very complex and maybe best left to weather routing apps such as Predictwind and qtvlm.

  • THANK YOU!!! this is awsome. I love to sail and work with computer models, so maybe this wishlist will help:

    WIND DIRECTION: definitely BOTH: relative and absolute. You could add one more line to the table.

    SPEED:: Set the speed of your vessel, but add/substract according to relative wind direction. For example: Av. Speed: 5 knots Correction: +- 2 knots. When you start from point A you start at av speed and add or substract up to 2 knots according to relative wind. You can use the following formula to do this: Corrected Average Speed = Average Speed +(1+0.0336*(RelWindAngle)-0.000146*(RelWindAngle^2)). This will assume maximum speed of 7 knots at wind angle 130, and speed of 3 knots if the wind angle is 0. At angle 0 It assumes you will tack to the point upwind at a true speed of 3 knots. The wind angle goes from 0 to 180. Most sailboats follow this pattern. Average speed and correction should be in the settings.
    Also Current should correct the speed based on angle and strength.

    ROUTE INTERVAL ESTIMATION (hours): All variables are recalculated every this number of hours. The longer the period, the bigger the error due to averaging, but the less use of resourses for windy. I am assuming the route is a vector that gets recalculated at time intervals. Point one starts with actual data, after one interval of time (ex. one hour) the variables are recalculated with the forecast for the next hour at point number 2 of the route, which is located at the distance travelled at Corrected Average Speed.

    COMFORT INDEX: An index that will tell how good your route is based on relative wind direction, wind speed, wave high and direction. A formula similar to the one I showed before will give you this index. It should combine direction and intensity.

    WINDOW LIKELIHOOD: Once you have saved a route, you can check if the weather window is more or less favourable to achieve it. This can be calculated with the average corrected speed and comfort index. The departing date which achieves better scores in these two variables is the best departing date.
    This is all I have for now. I am in Florida, looking at Hurricane Dorian and praying that it does not get off course and hit my boat. Great job on Windy. I simply love your product and believe you have created the best weather software online.
    Let me know if I can be of further assistance.

  • @lgirado
    I had a typo in the formula. I omitted the negative sign in the first number of the equation. This is the correct one:
    Corrected Average Speed = Average Speed +Correction*(-1+0.0336*(RelWindAngle)-0.000146*(RelWindAngle^2)).
    The portion (-1+0.0336*(RelWindAngle)-0.000146*(RelWindAngle^2)) provides a value from -1 to +1 with this shape:

  • I have used this feature to map the center, measure the girth, path, pace, and distance from land...simultaneously for Dorian. Its a great tool...and to my great advantage...simple to use! ;->
    Nice work.
    Naples Fl

  • @Cavajr No, I can't buy an Iridium!!!

  • @mrandall I have it but useful only if you can update data... which is not possible without wifi:

  • I have a iPad Pro, 1st Gen,. Please tell me how to access distance and Planning as I can't find it on my device. Thank you. I am a silver member.

  • Sailor

    On iPad, Distance & planning window appears with a long press on the screen. But I don’t know if it works with iPad Pro 1st generation.

  • @idefix37 Ok that worked and even if it didn't I appreciate it.

  • Great. May be sometimes you introduce nm nautical miles instead km. Implement it into Settings

  • Sailor

  • Absolutely incredible cool feature. I assume in future you support a velocity to move along the route and the matching weather for the future waypoints is adopted. At e also select time to enter for a waypoint.

  • great keep it up you are rocking best of luck

  • Hello,

    For me as a pilot is relative wind better then absolute.

    I appriciate also option to set speed or timeframe - to get a forecast for the route similar as offer it in Gramet.

    I have a problem with color scheme (very low contrast) of weather strip - pressure/FL/temps are nearly unreadable without zooming (VFR/IFR),


  • this is a start of a awesome feature - waiting to try out the option of speed of movement and changing forecast in course of time, and GPX..

  • For route planning interface (without weather info), checkout the interface. It works really well for roads, hiking trails.

    It might be too much work to implement that kind of interface, but just wanted to mention it incase its easy enough.

  • Do you plan to continue update it?

  • Administrator

    @igor-320 Sure, but we are working on other huge things :-) It can take us a while...

  • In the the Route Planner - Route Detail 38.56 -9.41 is displayed as 38.93 -9.69 please check here

  • @marekd

    Is there a way to use the Boat route planner on the mobile app for iOS? I really like the fact that I can see wave height for the route on the computer version but I cannot for the life of me figure out how to get that on the mobile app.

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