Only weather geeks will need/want to read this entire (excellent) article. Bottom line is that the US and western Europe is predicted to get severe weather beginning in mid-January to mid-February. The primary discussion is the temperatures rather than the level of precipitation but don’t put away your warm clothes yet.
The polar vortex is about to split into 3 pieces
Scientists are seeing signs that global weather patterns toward the latter half of January and into February may shift significantly to usher in severe winter weather for parts of the U.S. and Europe.
How it works: The possible changes are being triggered by a sudden and drastic warming of the air in the stratosphere, some 100,000 feet above the Arctic, and by a resulting disruption of the polar vortex — an area of low pressure at high altitudes near the pole that, when disrupted, can wobble like a spinning top and send cold air to the south. In this case, it could split into three pieces, and those pieces would determine who gets hit the hardest.