One of the most obvious changes, for anyone who has pattern recognition after watching "the weather" on the news for decades, is the last 3 or 4 years, the very obvious changes relative to the jet streams.
The jet streams are slowing, and meandering, with "blocking systems" of High and Low pressure staying stationary for days, if not weeks, throwing off balance in just a few years what has had thousands of years of stability.
In geological time scale, of course a few years is a relative instant.
THAT should be terrifying to those paying attention. Over the last few years, there have been many instances where upstate Alaska has been warmer than many parts of the US. There have been many instances in fact in the last few winters, where Anchorage has been warmer than Atlanta GA, or even places in Florida.
Only a few weeks ago, it was warmer at the completely 24/7 dark North Pole, than many places in the US.
Another completely obvious change, are these bizarre storm systems, where in one system, there will be way below average temperatures, blizzard conditions on the north end, freezing rain, sleet in the center of the storm, and on the southern and eastern side of that same storm system, there will be temperatures way over average with torrential rain, thunderstorms, and even tornadoes.
This has only been happening the last few Winters, and I believe this whole naming of these winter storms business, has to do with the corporate dominance of MSM normalizing these epic, and bizarre storms.
Things are going to get much more crazy in this regard, and fast.
Think how much the climate, and localized weather has changed just in the last few years, and extrapolate that out a decade.