Modern tools have transformed offshore passage planning — but models fail, windows close, and the barometer still tells the truth. Here's how to use all of it.
PredictWind, Passage Weather, Windy, LuckGrib, and SailFlow compared — what each does well, what it costs, and how to build a routing workflow for offshore passages.
What a GRIB file is, what it contains, how to download one via satellite, SSB, or marina wifi, and how to read model run times and resolution limits.
The discipline of reading synoptic charts, waiting for a high, understanding the 5-day confidence limit, and when to hire a professional weather router.
Barometer rules, cloud progression before a warm front, cumulonimbus identification, wind shift prediction, and why barometer + sky observation still matter at 5+ days offshore.