A strong winter clipper system will move across the northern U.S. Tuesday and Wednesday, bringing with it 4 to 8 inches of snow, wind gusts over 60 mph, and temperatures plunging well below zero in some areas. According to DTN meteorologist John Baranick, the system will begin its U.S. track early Tuesday, Dec. 9, entering through the Northern Plains, continuing into the Upper Midwest, and reaching the Great Lakes and Northeast by Wednesday, Dec. 10.

What sets this clipper apart is the sharper temperature gradient it carries - a key driver of its strength. Temperatures are forecast to climb into the 40s and 50s°F across the Northern Plains, while staying in the 30s and 40s°F in the Midwest, creating a volatile clash with colder air to the north. Areas like Minneapolis, which haven't seen a day above freezing since Nov. 25, could briefly thaw before the arctic blast returns.

The snowfall zone is expected to stretch from southeast Saskatchewan through central Minnesota, into Michigan, and then along the U.S.-Canada border through the Northeast. A sharp southern edge to the snow band could leave regions just miles apart with vastly different conditions - rain or light snow to the south, intense snow accumulation to the north.

As the system deepens, strong winds will follow. Gusts in the Northern Plains could exceed 60 mph, raising the risk of structural damage and power outages. Further east, wind speeds are expected to be lower, around 30-40 mph, but enough to cause snow drifting and minor travel disruptions. However, blizzard conditions are not currently expected due to the limited overlap between wind and heavy snow.

On the back of this storm, a new wave of cold arctic air will sweep south from northwestern Canada, sending temperatures in parts of the Northern Plains and Upper Midwest below 0°F. As this cold air hits the Great Lakes, it will trigger another round of lake-effect snow through Wednesday and Thursday, with some locations seeing an additional 12+ inches of snow, particularly in northern Michigan and downwind of Lakes Erie and Ontario.

Even colder air will arrive 48 hours later with another clipper system. Forecasts indicate this second burst could bring record-breaking cold, with high temperatures staying below zero across the Northern Plains on Friday and Upper Midwest on Saturday. In many areas, temperatures will be 20 to 30 degrees below normal, while the Northeast braces for anomalies around 15-20 degrees below average.

With back-to-back systems, the northern U.S. faces a challenging week of hazardous travel, agriculture disruptions, and energy demand spikes. Farmers, utility managers, and local officials are advised to monitor conditions closely as the strongest winter weather of the season descends across a broad swath of the country.