2026 Polar Vortex Forecast: Map Reveals Which States Will Face Record-Shattering Cold

Subzero Signals: What the Polar Vortex Has in Store Through Early February Meteorologists on both sides of the Atlantic warn that a fresh disruption of the stratospheric polar vortex is on track to unleash the coldest air of the winter across large parts of North America and Europe during the last two weeks of January and into early February. Latest model runs show a sharp split in the vortex triggered by a mid-month stratospheric warming event; one lobe is forecast to dive south over Hudson Bay while the other rotates toward Siberia, opening a direct Arctic pipeline into the mid-latitudes. United States and Canada: Deep Freeze, Quick-Hitting Snow • Timing: The first surge of Arctic air reaches the northern Plains and Upper Midwest this weekend, then expands southeastward early next week. A second, even stronger blast is projected around 25–28 Jan. • Temperatures: Forecast lows could plunge to –25 °F (–32 °C) in northern Minnesota, –10 °F (–23 °C) in Chicago and single digits in New York City; daytime highs may stay below freezing as far south as Atlanta during the late-January wave. • Snow and ice: Frequent Alberta clippers plus lake-effect bands are expected to lay down 6–12 in. of powder from the Dakotas to western New York, with localized 2-ft totals east of the Great Lakes. Farther south, a quick coastal low could brush the Mid-Atlantic with light snow next weekend, but major Nor’easter potential remains limited for now. • Hazards: Dangerous wind chills below –40 °F, increased risk of frostbite in under 10 min, icy roads and power-demand spikes are the primary concerns. Europe: Cold Pools Sneak West While the core chill centers on North America, ensemble guidance indicates a companion cold arm swinging into northern and eastern Europe. High pressure parked over Scandinavia will funnel continental Arctic air toward Germany, France and the Iberian Peninsula between 22 Jan and 1 Feb. Overnight lows could drop below –10 °C in Berlin and –5 °C in Paris, with widespread frost reaching Madrid. Snow chances look highest along the Alps and Balkans; however, any retrogression of Atlantic low pressure could briefly moderate temperatures in the west before the end-of-month cooldown resumes. Why It’s Happening: The Science in Brief 1. Stratospheric Warming: A rapid 50 °C temperature spike near 10 hPa weakened the vortex’s circular wind wall, allowing it to elongate and split. 2. Wave Reflection: Strong North Pacific and North Atlantic ridges are “hammering” the vortex from below, amplifying poleward heat flux and shoving frigid air equatorward. 3. Snow-and-Ice Feedbacks: Expansion of Canadian snowpack and developing Great Lakes ice will help maintain surface cold once it arrives. What To Watch Next • Energy Markets: Natural-gas demand across the U.S. East and Central regions could surge 20–30 % during peak cold days. • Infrastructure Stress: Utilities should prepare for possible rolling blackouts if power draw exceeds supply during single-digit nights. • Travel Disruptions: Expect flight delays at Chicago, Minneapolis, Toronto and New York hubs; motorists should carry extra blankets, chargers and food. • Health Precautions: Layer clothing, limit skin exposure and check on vulnerable neighbors; frigid air can trigger hypothermia within minutes. Bottom Line The polar vortex is poised to flex its muscles, sending successive Arctic waves that will test power grids, transportation networks and personal preparedness. Residents from the Dakotas to the Carolinas, and from Scandinavia to Spain, should monitor local forecasts, secure winter supplies and brace for a prolonged spell of brutally cold, storm-punctuated weather as January turns to February.