Summary (tl;dr)

A historic and powerful late-season winter storm, described as a "bomb cyclone," is currently impacting the Upper Midwest and Great Lakes regions of the United States and parts of Canada, bringing blizzard conditions, record snowfall, and dangerous travel.

Essential Background

While March often sees a transition to milder weather, the NOAA's March 2026 outlook had indicated that storms would focus on the Great Lakes and Ohio Valley, with potential for late-season snow in the Upper Midwest. This current event follows earlier severe weather outbreaks in the warmer sectors of other March storms, but this system is characterized by its intense cold-side impact.

The Full Story

As of Sunday, March 15, 2026, a major winter storm is lashing the U.S. Midwest and Great Lakes, leading to widespread blizzard warnings across a vast area from the Northern Plains to the Upper Great Lakes. This "historic March winter storm" is fueled by an intense low-pressure system, a bomb cyclone, rapidly deepening over Iowa and Wisconsin. It is threatening record-breaking snowfall, with some areas in Wisconsin and Michigan's Upper Peninsula projected to receive up to 36 inches due to lake-effect enhancement.

Blizzard conditions are developing across central and southern Minnesota, with powerful wind gusts approaching 60-70 mph, creating extremely dangerous travel conditions and significantly reducing visibility. Major cities like Minneapolis and Chicago are bracing for an Arctic plunge following the snow, with wind chills expected to drop to -10°F. Travel has become impossible on major interstates in the Dakotas, Nebraska, and Iowa due to significant blowing snow and whiteout conditions. Hundreds of flights have been canceled at Minneapolis-St. Paul International Airport, and Minnesota Governor Tim Walz has authorized the National Guard to assist with emergency operations. Hundreds of thousands of Americans from Wyoming to Michigan are already without power due to heavy, wet snow combined with strong wind gusts.

Why It Matters

This severe late-season winter storm is disrupting daily life for millions, posing significant risks to safety and infrastructure. The combination of heavy snowfall, powerful winds, and plummeting temperatures creates life-threatening conditions for travelers and those without power. The potential for record-breaking snow and widespread power outages highlights the vulnerability of communities to extreme weather events, sparking concerns about emergency preparedness, resource allocation, and the broader implications of such intense weather occurrences, even as winter nears its end.

Geographic Location

• Southern Minnesota, United States (blizzard conditions, dangerous travel, no travel advisory, school closings, numerous crashes)
• Central Minnesota, United States (heavy snow, blizzard conditions)
• Twin Cities metropolitan area, Minnesota, United States (Minneapolis-St. Paul International Airport flight cancellations, additional snowfall expected)
• Rochester, Olmsted County, Minnesota, United States (11 inches of snow reported)
• Mankato, Blue Earth County, Minnesota, United States (around 9 inches of snow reported)
• Owatonna, Steele County, Minnesota, United States (around 9 inches of snow reported, National Guard armory activated)
• Wabasha, Wabasha County, Minnesota, United States (15 inches of snow overnight)
• Lakeville, Dakota County, Minnesota, United States (more than 12 inches of snow)
• Cannon Falls, Goodhue County, Minnesota, United States (more than 12 inches of snow)
• Savage, Scott County, Minnesota, United States (more than 10 inches of snow)
• Chanhassen, Carver County, Minnesota, United States (National Weather Service office, 7.6 inches of snow reported)
• Western Wisconsin, United States (most intense snow band, blizzard conditions, heavy snow with 12 to 18 inches expected, up to 2 feet in parts of west central Wisconsin)
• Green Bay, Brown County, Wisconsin, United States (potential for 1-2+ feet of snow, potentially setting two-day snowfall records)
• Upper Peninsula, Michigan, United States (localized totals projected to reach 36 inches due to lake-effect enhancement, considerable wind damage and power outage potential)
• Marquette, Marquette County, Michigan, United States (wind gusts upward of 75 mph possible)
• Northern Plains, United States (blizzard status, significant blowing snow, whiteout conditions, travel impossible on major interstates)
• Eastern Dakotas, United States (12 to 36 inches of snowfall expected)
• Nebraska, United States (significant blowing snow, whiteout conditions, travel impossible on major interstates)
• Iowa, United States (intense low-pressure bomb cyclone expected to deepen rapidly, significant blowing snow, whiteout conditions, travel impossible on major interstates)
• Ontario province, Canada (12 to 36 inches of snowfall expected)