¿May be chaotic? ¿May be? That is the understatement of the month. A million gnus in the savannah are chaotic, but they are like the Bolshoi Moscow ballet company compared to the weather.

So, noone can tell you with certainty what the weather will do, or how it will react to some event. Science can only tell you generalities and probablities. It is always like that, but in this case more so. But you ignore what the scientists say at you own peril.

Climate, not weather. There's a fair amount of discussion on just how chaotic the climate system is, and on what sort of timescale.