You misunderstand what I am saying. It's not that they share the weather, it's more that when a nearby zone is having it's dominant weather, the neighboring zone has a good chance of having it's dominant weather too. There are some exceptions of course (Grauberg and Attowha for example--they tend to spawn a weather almost constantly at times, regardless of what other areas are doing), but if you've spent a reasonable amount of time hunting weather an a lot of zones, you will start to connect some of the dots.

It kind of mimics real life like that. It stands to reason if I have stormy weather here in my town, one can expect that a nearby town either recently had stormy weather, is having it now, or may be getting it soon. It may be more/less severe, or just as bad. They may just get the high winds while we get the thunderstorms...but there is a link. The same principle more or less applies in FFXI.

When there were dust storms in W. altep, wind was often pending in Kuftal (which is regionally aligned with Volbow, not Kuzotz--so it often meant wind cycles may pop in Teriggan also).
Vunkerl/Pash/Rolan [s] would often align their thunder cycles pretty close, but when water was up, Vunk would sometimes be more prone to spawn short wind cycles, then go into thunder.
When wind was in season for Attowha and wind was up at Mea, Attowha would start getting wind in it's forecast--would be earth if it was in season. Again, different regions, but close enough in proximity to share similar cycles.

As for Sky/Ro'Maeve linking up...when I was running to sky and thunder was up in Ro'Maeve, wind was often pending for sky. Wasn't always up at the same time, but it would often be within the next 3 day cycles--but sometimes I cought them together.

There IS a connection, jsut not a direct 1:1 connection.