First blast of winter could unleash lake-effect snow in parts of upstate NY. What to know

AI-assisted summary

A powerful weather pattern is expected to bring cold, Canadian air to the Great Lakes and Northeast in mid-November.

Upstate and Western New York could see their first lake-effect snow of the season this weekend and into early next week.

The developing La Niña pattern may lead to a colder winter with above-average snowfall for parts of the Northeast.

A weakened polar vortex could increase the chances for Arctic blasts and heavy snow events across the region this winter.

A powerful pattern shift is on deck, bringing the first true blast of winter to the Great Lakes and Northeast regions.

This system will pull cold, Canadian-origin air into New York and interior New England, setting the stage for the season’s first widespread freezes and early winter conditions.

T