My grandfather was a meteorologist (taught me forecast based observation and weather station data), and I am also a first officer half of the year (as well have education in modelling for navigation). This year was rough with modelling. I use Windy to validate my forecast and navigation decisions at sea. As we sail, anemometer readings are crosscheck with the forecast from windy and mine, and windy didn't go well. Sometimes paper and pencil do a great job. I started using Windy (windyty.com) in 2016, and until 2020 forecast was quite good, my takeaway is that maybe Climate Change could make the job of weather forecasting much harder.