Chaos....the atmospheric highly chaotic, which is why you could replicate identical conditions via AI and the season would still evolve at least somewhat differently. This is why I say that it sometimes just comes down to luck whether or not any discrete event works out.....I know some don't like to hear that because they want to operate under this fallacy that everything can be figured out on a calculator, but it simply isn't so. Some are also leery of that explanation because they feel forecasters will use it as an excuse for a failed forecast, but there is an element of luck in weather. At the end of the day, the forecast is still either right or wrong and one needs to take accountability for that....just as in sports...plenty of luck involved there, but there still needs to be a winner and a loser.