An Arctic cold wave is moving across Europe as a persistent Greenland block redirects polar air southward. Forecast models show temperature anomalies between −10°C and −15°C (14°F and 5°F) at 850 hPa with extensive snow cover developing over much of the continent, with heavy snow already affecting parts of the UK and Balkans at the start of January 2026.
The final polar vortex collapse of the 2024–25 winter season has begun with one of the strongest sudden stratospheric warming (SSW) events being forecast to develop and bring late-season cold to much of the U.S.
The final polar vortex collapse of the 2024-25 winter season is forecast to occur in mid-March as a strong stratospheric warming event develops, potentially leading to significant weather disruptions across the Northern Hemisphere.
Arctic outbreak that brought extreme cold to much of the U.S. is coming to an end, after breaking over a century-old temperature records in some parts of the country.
The polar vortex is stretching southwards for the 10th time this season threatening to bring record-breaking cold temperatures across the United States through the next week.
An Arctic cold front is forecast to descend from the northern Plains into the Midwest on Friday, November 29, 2024 bringing the coldest temperatures since mid-February and significant snowfall across the Great Lakes region.
A powerful winter storm is set to bring heavy snow, strong winds, and blizzard conditions across the Midwest to the Great Lakes through Saturday, January 13, 2024. Following this storm, dangerously low temperatures are forecasted for the Rockies and Plains. This storm system is part of the same weather pattern that caused significant disruptions in southern Ontario, Canada.
The United States is bracing for its first significant Arctic air outbreak of the winter, impacting the north-central region with bitterly cold wind chills and extending through the weekend. The northern Rockies and Plains are particularly at risk, with the Arctic surge also expected to bring record-breaking cold to the south-central U.S.
Finland experienced its coldest January temperature since 2006 when Enontekiö Airport registered -42.4 °C (-44.3 °F) on January 4, 2024. The severe cold is not isolated to Finland, as nearby regions in Sweden and Norway have also reported record-low temperatures, indicating a widespread Arctic chill across the Nordic countries.
The United States is bracing for a widespread cold air outbreak, anticipated to affect much of the lower 48 states through mid-January due to a strong mid-level high pressure over Greenland and the negative Arctic Oscillation phase. Expected severe conditions include sub-zero temperatures and wind chills, widespread wintry precipitation, and potential flooding along the Eastern Seaboard.
