Heavy snow and strong winds are affecting parts of Idaho, Montana, Washington, and Colorado, with multiple winter storm warnings and advisories in effect through Saturday, December 6, 2025. Mountain areas are expected to receive 15–60 cm (6–24 inches) of snow, creating hazardous travel conditions through the weekend.
The first of multiple Arctic blasts expected this month brought record-low temperatures across the Midwest on Thursday, December 4, 2025, with reports of over 40 record lows for the day. More record lows are expected as the Arctic wave moves through the Northeast on Friday, December 5.
Multiple winter weather advisories are in effect across Texas and the Oklahoma panhandles on Thursday morning, December 4, 2025, as snow and sleet create hazardous travel conditions through early afternoon.
Heavy snow squalls are forecast to hit much of the U.S. Northeast through Thursday, December 4, 2025, with New York State and parts of New England expected to see the strongest impact. The snow squalls triggered by, and arctic surge will create dangerous travel conditions across key routes including the I-90 corridor.
Three atmospheric rivers (ARs) are forecast to make landfall over the Pacific Northwest (PNW) through December 10, 2025, producing prolonged precipitation and high moisture transport across western Washington and Oregon.
The polar vortex is forecast to settle near Hudson Bay, sending repeated waves of Arctic air into the central and eastern U.S. during the first half of December 2025.
An Ice Storm Warning is in effect for the Kuskokwim Delta and Valley in Alaska through till 09:00 AKST on Wednesday, December 3, 2025. Heavy snow, Ice accumulations, and strong winds will create dangerous travel conditions and less than 400 m (0.25 miles) of visibility on roads due to blizzard conditions.
At least one person was injured after a tornado struck a motor camp near Lake Dudding in rural Manawatū on Wednesday afternoon (LT), December 3, 2025.
The season’s first nor’easter began impacting the Mid-Atlantic and Northeast overnight, prompting a State of Emergency in parts of New Jersey and school closures across multiple states. The storm is forecast to rapidly intensify, possibly dropping up to 30 cm (12 inches) of snow across parts of the interior Northeast through Tuesday.
Over 1 000 people have died and hundreds remain missing on Tuesday, December 2, 2025, after rare Tropical Cyclone Senyar brought severe flooding and landslides across Indonesia, Thailand, and Malaysia.
