Why visibility suddenly to 1 hex?

[Ricky B]

I am at work so I can't check things out. But I take it you have your scenario tests starting on the 23rd, the day the problem occurs, right? If I recall from an earlier post here, the weather.dat is IGNORED for the first day of a scenario - it isn't read until the first midnight turn (or first turn after if there isn't one). So in your test scenario, set the max vix in the scenario itself to 2 and I think that will keep it from increasing on day 1.

Rick