A powerful storm system is expected to develop this week and blast portions of the Northeast with heavy rain while accumulating snow is possible in the Ohio Valley and Appalachians.

A significant winter storm is set to sweep across the US, potentially disrupting travel plans for millions ahead of Thanksgiving. This marks the first widespread snowstorm of the season, arriving as the second in a pair of storm systems moving through the country.

The heaviest precipitation is expected in Central New York and the Finger Lakes, which could see some lake effect snow or rain after the main storm moves through. Temperatures will likely be too warm for areas like Syracuse to see snow, but there’s a 50% chance that higher elevations like the Catskills will.

The same storm system that is producing severe weather and torrential rain in portions of the Plains will continue to move to the north and is expected to blast portions of the Upper Midwest with snow during the first part of the new workweek.