Did you know you are a little behind the times. CO2 is no longer the big threat (yes, man made global warming is real), methane has become an extreme threat due to global warming. No longer just melting permafrost from Russia to Greenland but the Arctic sea itself http://www.dailymail.co.uk/sci....
Peaks in weather reflect changes over time as the ocean absorb heat and warmer seas impact weather.
Now the interesting period starts, where peak weather events, can now become extremely dangerous. A extreme high temperature weather event can trigger a mass release of methane, which will feed into that event hugely exacerbating it. Will it occur and when will it occur, have fun with dice because it is a far more complex event than simple climate modelling, in comparison.
How bad could it be, how about a decades worth of melting in a season due to the location and the impact of methane on heat retention. That weather event could trigger a climate event that could last quite a few years, and a century of sea level rise could occur in those years. Cheer up, after the even is over the methane would start breaking down and the planet would start cooling due to ocean absorption of heat and mass cloud formation, reflecting sunlight. Of course reasons to celebrate might be a bit muted with coastal areas under more than a metre of sea water (that metre could well be a huge low ball guess). Time to panic, well I would genuinely recommend not investing in likely underwater properties. So places in the world in far more danger than others. For the US retiring in Florida right now would be a pretty stupid idea.