Winter 2017-2018 Discussion Thread (Northern Hemisphere)

That's like a dream scenario for me - just make those blues much more extreme . But I believe the same model was showing warmth over most of that same area the previous month, so I wouldn't put much stock into that. I've heard rumors that at least in the eastern U.S. the combination of east-based second-year La Nina along with various signals favorable to a cold winter (such as the fantastic ice and snow growth especially in Siberia) may produce a volatile winter (lots of ups and downs) or a cold winter but likely not a warm winter, perhaps most likely a volatile and cold winter - the kind of winter that's mostly cold and snowy but where warmth and tornadoes penetrate far to the north every couple weeks. All of this is really mere educated guessing but it seems a guess at least as good as any of the others.

It also doesn't seem very likely to me that the sort of Greenland blocking the CFS has for the winter would permit that much warmth across Europe, but if the dominant feature producing cold in North America is the Pacific blocking it may be possible.