Potential Northeast Snow Storm Late Week
It's that time of the year when cold Canadian air clashes with southern warmer air and creates instability. In a normal winter, many of these disturbances ride along the jet dipping across the southeast and up the coast. It looks like there may be a good possibility of a storm this weekend. It is too early to tell, but all of the models are starting to point to a coastal low forming from Thursday-Friday. It would be a dream for many snow deprived residents in the North East to get a taste of winter. I've highlighted the major cities on the GFS in red dots to show the swath of moisture from the system. The NAO is also pointing to negatives.The NAO stands for the North Atlantic Oscillation. The NAO is a large scale seesaw in atmospheric mass between the subtropical high and the polar low. The corresponding index varies from year to year, but also exhibits a tendency to remain in one phase for intervals lasting several years. A negative effect usually indicates stormy and snowy.