Confidence in a significant snowstorm is increasing for Thursday night and Friday
As colder air begins to filter in over the next few days, the weather pattern will become more favorable to support a snowstorm for later this week. While details still remain a bit uncertain, the trends in all of the latest model guidance support the threat for a potentially high-impact snow event.
Although December was a pretty active month as far as winter storms were concerned, there were no major, widespread snowstorms for the entire area. The main reason for this was the lack of any North Atlantic blocking, which helped to keep the flow in the pattern too fast for any major, organized amplification. However, this time around, some North Atlantic blocking has developed. Although it is not tremendously strong, it is located in a perfect position to slow down the pattern and support a major storm. Let’s go over all the pieces in the latest model guidance.
The image above shows today’s 12z European Model at the 500mb level, valid for Tuesday evening. There are several key pieces labeled which indicate the potential for a big storm. Although the storm itself is still a few days away, the fact that this setup is in place within 36 hours gives us a bit higher confidence in a snowstorm of some kind.