From: Third rock from the Sun.
I would guess that if the map is divided into, say, two weather zones and the second zone doesn't meet a certain size criteria then it's dropped and the map is reduced to one weather zone. It would seem silly to have a weather zone of ten hexes. Of course that would depend heavily on scale. In any event, I guess no one has a problem with it.
I had assumed that all the weather zones were the same size, ie, 900 km/2 = 450 km or 1200 km / 3 = 400 km, but I didn't do any testing on that, so dunno.
I don't have a "problem" with it, but it would be nice if the info in the manual were correct, or at least better explained.
It was the same in TOAWIII. The maps were just smaller. So since no one has brought this up I said no one has a problem with it. So much of the manual has been simply copied and pasted there is lots that isn't exactly correct, not even when the manual was initially published in 1998. Yes, it would be nice to be told exactly how it works instead of giving some generic explanation that is inaccurate. I've never had to worry about weather zones so never saw this. Any previous map I've made didn't cover enough territory and the current one is over 1700 km so it has all of the weather zones.