Polar vortex split could bring brutal cold to Northeast. Will it impact NY?

"I was a little surprised that it's a whole split. It's a bit stronger (than the normal collapse), and it will likely trigger a pattern change. It could lock in a pattern that lasts. We'll definitely see some cold shots and late frost - maybe even down into parts of Tennessee and the Carolinas."

"That structural change can redirect Arctic air in ways that are more likely to affect surface weather across parts of the northern U.S., compared with the vortex simply fading away for the season."

"With temperatures forecast to run roughly 15 to 25 degrees below normal, nighttime lows across New York could fall into the single digits in many inland areas, with below-zero temperatures possible in the coldest northern and interior valleys."

The Great Lakes and Northeast regions face an unusual polar vortex event where the vortex is expected to fully split into two lobes rather than simply collapse as typically occurs in late winter and early spring. This structural change will redirect Arctic air more effectively toward the northern United States surface weather compared to normal seasonal fading. Temperatures are forecast to run 15 to 25 degrees below normal, with nighttime lows in New York potentially reaching single digits in inland areas and below-zero temperatures in northern valleys. This pattern change could trigger a prolonged cold period extending into late March, potentially affecting areas as far south as Tennessee and the Carolinas, resulting in late frosts and an unusually harsh early spring.

Read at Yahoo News