The atmospheric river that happened last winter which ripped through California wrecking major flooding and snowfall is still in effect this winter but will not be as strong. But the good news is there is a 200 year long gap after it departs before it will show up again. This one was not cursed by global warming. Instead it was actually an ongoing cycle that was proved by science and computer modeling by studying geological evidence going back thousands of years in the earths layers. So no now living humans have ever before experienced it and never will experience it again in their lifetime. Not that there won't be other storms causing flooding and higher levels of snow falls. Just not this particular set of severe cyclic circumstance cause.
If you want to read more about it the keyword are--- California atmospheric river 200 year cycle. A lot of articles were published on it last winter.