The AMOC may be collapsing sooner than previously thought possible, which will radically shift sea level by 1 meter or more and make the US Northeast and Europe colder, and the Southern hemisphere MUCH warmer.Like so many of the knock-on effects of climate change, we are radically underestimating the instability of our environment.
More close to home,La Nina is now thought to likely follow this year’s El Nino. See https://www.latimes.com/environment/story/2024-02-10/la-nina-on-the-horizon-californias-wild-weather-year-could-get-even-weirder.