How is this falsifiable? i.e. how would you prove that a weather extreme is not due to global warming? (general question, not specifically aimed at you).
It isn't. Climate is a statistics game. You cannot prove or disprove that a specific dice throw ended up 6 because the dice was unfair, but you can still make robust (and thus falsifiable) predictions over hundreds of throws.
Wait until there is enough data to see where it fits into trends.