Projected weather/course app

[Bellinghamsailo]

I have used windy.com and found it very reliable. It requires some analysis and learning the patterns but is a great free app.

[Floridajohnb]

Originally Posted by CassidyNZ

Yes, almost exclusively.

I also. Use Predict Wind.

[Paul L]

Originally Posted by Bellinghamsailo

I have used windy.com and found it very reliable. It requires some analysis and learning the patterns but is a great free app.

Windy is a very good presentation of GFS and Euro GRIB data. The underlying data is the important stuff.

[wackerb]

I like Predictwind because it shows the forecasted wind/wave for a trip based on a polar approximation. That way I can see when changes are forecast relative to my projected position on a graph of the whole voyage. That way I don't have to manually select different grib files at different points of the voyage.

However, I think there are only two major models, ECMWF and GFS that just about all forecasts are based on. They're often 1do degrees and 20 kts off. I treat them as unreliable guesses that are better than what my weather knowledge allows me to guess.

I've used local weather guys (NZ) and some others with disappointing results. They don't have that much different information and I feel I'm better making my own conservative decisions from the best model presentation(s) I can get. Predictwind works for me for their presentation and integration of gribs through the time of the voyage, but their weather routing, and probably everyone else's, are deceptively precise and totally inaccurate because the're based on inaccurate predictions.