This is a new version of a chapter I wrote back in 2017, part of an ongoing update of our entire Weather Reception and Analysis Online Book. The rewrite of this chapter was so extensive that it made sense to republish it, rather than just add it to our Recently Updated area.
Also, we rewrote chapter one, so you may want to read that now to understand why all this matters.
In the first chapter, I introduced the concept of strategic weather analysis as an addition to the tactical version that most cruisers do.
In this chapter, and the next three, I'm going to get down into the details of analyzing weather on a day-to-day basis so we can plan our cruises as much as two weeks out, and to evaluate the risks of a forecast or GRIB being wrong in a bad way.
But first, let's look at the gear and software.