Summary (tl;dr)

Multiple winter storm warnings across the Central, Northeast, and Western United States have caused widespread travel disruptions, school closures, and significant delays as early December ushers in hazardous winter weather conditions.

Essential Background

The beginning of meteorological winter in early December 2025 has brought a series of severe winter storms across large parts of the United States. This cold snap, influenced by an arctic air mass and the ongoing La Niña climate pattern, which typically brings cooler and wetter conditions to northern states, has created conditions ripe for heavy snowfall and icy precipitation.

The Full Story

Winter storm warnings and advisories are currently in effect across several regions, leading to major impacts on daily life. In the Northeast, a low-pressure system is intensifying, bringing significant snowfall of 5 to 10 inches from Pennsylvania's Poconos to coastal Maine, with widespread icing expected along the Virginia and West Virginia border. This has already led to numerous school closures and delays across Massachusetts, New Hampshire, Pennsylvania, and parts of New York and Connecticut, with New Jersey declaring a state of emergency in five northern counties.

The Midwest has also experienced substantial snowfall, with northwestern Indiana and northern Illinois seeing 6 to 11 inches of snow, and Milwaukee recording up to a foot, prompting a snow emergency. School districts in Missouri, Iowa (including Des Moines with up to 10 inches of snow), and Ohio's Miami Valley region announced extensive closures and delays following heavy snow and icy roads.

Out West, Colorado's Front Range, including Denver, received its first major storm of the season, with areas in Jefferson County getting nearly 8 inches and mountain passes like I-70 experiencing hazardous conditions and potential closures due to heavy snow and strong winds. Winter storm warnings are also active across parts of Idaho, Montana, and Washington, with forecasts of 6 to 24 inches of snow in mountain areas. Further south, the Texas and Oklahoma panhandles, along with central and western Oklahoma, are under winter weather advisories due to snow and sleet causing slick travel conditions.

Why It Matters

The widespread winter weather is significantly affecting transportation, education, and public safety. Travel is becoming hazardous across affected regions, with slick roads, low visibility, and the potential for road closures causing major delays for commuters and long-distance travelers. School closures and delays disrupt routines for families and impact learning, while the frigid temperatures and icy conditions pose risks of accidents and power outages. Local authorities are urging residents to exercise caution and prepare for challenging conditions, as these early December storms highlight the start of a potentially severe winter season.

Geographic Location

• Down East Maine, Maine, United States (heavy snowfall)
• Northern New Jersey, United States (state of emergency declared in five counties)
• Poconos, Pennsylvania, United States (heavy snowfall)
• Pottsville, Schuylkill County, Pennsylvania, United States (slushy street conditions)
• Hudson Valley, New York, United States (winter storm watches and advisories)
• New Bedford, Bristol County, Massachusetts, United States (battling cold weather)
• Worcester, Worcester County, Massachusetts, United States (shoveling frozen slush)
• Southern Vermont, United States (heavy snowfall)
• New Hampshire, United States (heavy snowfall, school closures)
• Northwest Corner, Connecticut, United States (snow accumulation)
• Enfield, Hartford County, Connecticut, United States (snowblowing sidewalks)
• Northern Indiana, United States (heavy snowfall)
• Northern Illinois, United States (heavy snowfall)
• Chicago, Cook County, Illinois, United States (record snowfall)
• Milwaukee, Milwaukee County, Wisconsin, United States (snow emergency declared, heavy snowfall)
• Des Moines, Polk County, Iowa, United States (up to 10 inches of snow, school/university cancellations)
• Miami Valley region, Ohio, United States (school closures and delays)
• Kansas City Metro, Missouri, United States (school closures or virtual learning)
• Front Range, Colorado, United States (first major winter storm)
• Jefferson County, Colorado, United States (up to 8 inches of snow)
• Fort Collins, Larimer County, Colorado, United States (4 to 6 inches of snow)
• I-70 Mountain Corridor, Colorado, United States (hazardous travel conditions)
• Central Idaho Panhandle Mountains, Idaho, United States (winter storm warning)
• Little Belt, Montana, United States (winter storm warnings)
• Texas Panhandle, Texas, United States (winter weather advisories, slick roads)
• Oklahoma Panhandle, Oklahoma, United States (winter weather advisories, slick roads)
• Oklahoma City Metro, Oklahoma County, Oklahoma, United States (snow and sleet, slick surfaces)
• Loudoun County, Virginia, United States (school closures)
• Prince George's County, Maryland, United States (school closures)