Standard marine weather (GRIB) forecasts have poor resolution because they come from satellite imaging, not from actual weather measurements. They may have been made hours ago, and assume that the wind is the same everywhere within giant cells (which is not true).
The wireless SailTimer Wind Instrument™ is the first wind sensor with crowdsourcing for better marine weather and navigation. The SailTimer Air Link™ can crowdsource from wired anemometers. The SailTimer™ app will soon display contour lines for crowdsourced wind zones, so you can plan your optimal route. Register below to use SailTimer products with crowdsourced marine weather, or to share your own data and improve navigation for all.