Rab said: That's not how it works, overall warming increases energy into the atmospheric system, some of that energy materialises into stronger storms, with stronger winds, larger snow storms, more hail, and colder conditions, all the result of more energy in the system
Most storms are formed from warm waters, which give storms energy, they move into areas with high moisture and low pressure unleashing massive hail/snow/wind storms releasing all that energy
It's far more complicated than just local conditions at anyone time
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The way I've always liked to put it is "Global warming doesn't mean local warming".
Just to elaborate a bit more. Global warming has varied effects. The net impact in terms of humidity is an increase - air gets more humid. But dry areas, like deserts, will get drier. There will be parts of the world that will see their average annual temperature drop by a few degrees over the next few years... but when you average it over the entire earth, there will be an increase. And an increase of one degree in temperature is much larger than you might think.
The atmosphere consists of about 5x10^18 kg of air. Air has an approximate specific heat (when dry - water vapour has a higher specific heat, which means the number coming out at the end is probably a lowball estimate) of 1 kJ/kgK. As such, as a very rough estimate, a 1K (equal to 1 degree celsius) increase in temperature would increase the energy in the atmosphere by about 5x10^21 J. To put this into perspective, that's roughly the total energy use that the United States would see over a 54 year period if energy use were kept completely constant for the next 54 years.
To put it another way, it's the total energy released in all nuclear tests and all nuclear bombs detonated combined... more than 2000 times over. That's how much energy it takes to heat the atmosphere by just one degree celsius. And that's not even factoring in the oceans, which absorb a ridiculous amount of energy (There's 5x10^18 kg of air, but there's over 10^21 kg of water, and water absorbs energy better than air does, having a higher specific heat).