Severe Tropical Cyclone Hayley is forecast to make landfall over the northern Dampier Peninsula, Western Australia, late on Tuesday, December 30, 2025, as a Category 3 system. The cyclone is expected to bring destructive winds, heavy rainfall, and flash flooding across parts of the west Kimberley coast.
Multiple tornadoes, including an EF-1 with peak winds of 158 km/h (98 mph), touched down in Illinois on Sunday, December 28, 2025, with significant damage and power outages being reported across Tazewell, Christian, and Macon counties.
The Iowa State Patrol responded to 31 crashes during extreme winter weather on December 28, 2025, as snow, high winds, and whiteout conditions spread across the state. One person was killed, and several others were injured while visibility dropped to near zero on major highways, including Interstate 35.
A powerful winter storm named Johannes swept across the Nordic countries over the weekend, killing three people in Sweden and leaving hundreds of thousands without electricity across Sweden, Norway, and Finland. Sweden’s Meteorological and Hydrological Institute (SMHI) issued widespread alerts for strong winds as the system moved north. The storm, known as Hannes in Finland, also caused major travel disruptions, grounding flights and halting rail and ferry traffic.
A powerful bomb cyclone is forecast to strike Ontario bringing heavy snow, freezing rain, and severe winds from Sunday through Tuesday, December 28 to 30, 2025, as the deepening low crosses the Great Lakes. Environment and Climate Change Canada has issued Winter Storm and Freezing Rain Warnings, with snowfall totals of up to 50 cm (20 inches) and gusts exceeding 100 km/h (62 mph) expected in some areas.
Blizzard warnings have been issued across the Upper Midwest from Sunday into Monday, December 28–29, 2025, as a powerful winter storm moves toward the Great Lakes, bringing blizzard conditions to large parts of Minnesota, Iowa, Wisconsin, and Michigan.
Winter Storm Ezra is forecast to bring severe winter weather across large parts of the United States from Sunday through Tuesday, December 28–30, 2025, as it moves from the Great Lakes into southern Canada. Heavy snow, blizzard conditions, and hazardous icing are forecast across the Upper Midwest, Great Lakes, and interior Northeast. Snowfall totals of over 30 cm (1 foot) are expected in parts of Michigan’s Upper Peninsula, while ice accumulations of up to 13 mm (0.5 inches) are forecast across interior New England through Tuesday.
A powerful winter storm swept through the U.S. Northeast on December 26–27, 2025, triggering states of emergency in New Jersey and New York, dropping nearly 30 cm (12 inches) of snow and leaving over 120 000 customers without power.
Winter Storm Warnings are in effect for large parts of the northeastern U.S., including New York, New Jersey, Connecticut, and Pennsylvania, from December 26 until midday December 27, 2025. Snow totals of 10–25 cm (4–10 inches) are forecast throughout warning areas, with the heaviest snowfall affecting the Friday evening commute as travel conditions deteriorate rapidly.
Multiple Ice Storm Warnings are in effect across western and central Pennsylvania from Friday, December 26, 2025, until early Saturday, December 27, 2025. Up to 8 mm (0.3 inches) of ice accumulation are forecast to create treacherous travel conditions, power outages, and tree damage.
