Winter Storm Warning: Major Blizzard Threatens 200 Million — 10 to 20+ Inches Headed for Twin Cities, Wisconsin, and Great Lakes This Weekend
The most dangerous winter storm of the year is building right now. A powerful two-system weather event is targeting the Upper Midwest, Great Lakes, and eventually the Eastern Seaboard this weekend, with the NWS warning a potential bomb cyclone could form Sunday night. Winter Storm Warnings are already active across 16 states from the Rockies to Maine.
The Big Weekend Storm: When, Where, and How Much Snow
A Winter Storm Warning is in effect from 7 PM Saturday to 7 AM Monday for Sherburne, Stearns, Wright, Anoka, Carver, Hennepin, Ramsey, and Washington counties in Minnesota. Total snow accumulations of 10 to 18 inches are expected with winds gusting as high as 40 mph. Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions will impact the Monday morning commute.
Snow totals are increasing as the system develops. The western portion of the warned area could see 6 to 10 inches, the central portion 8 to 14 inches, the eastern portion 14 to 18 inches, with portions of Wisconsin looking at 18 to 20-plus inches of snow.
Twin Cities and Southern Minnesota: 10–16 Inches Likely
NWS meteorologist Chris Shaffer says most models are coming in at 8 to 16 inches of snow, with the Twin Cities on the northern edge of the heaviest band and the southern edge pushing down to Owatonna and Rochester — calling that the sweet spot for heavy snow. The National Weather Service in a mid-morning Friday update says snowfall amounts of 10 to 16 inches are likely, with possibly more where the heaviest band sets up.
The winter storm warning includes a large portion of central and southern Minnesota including the Twin Cities, in effect from 7 PM Saturday to 7 AM Monday. Heavy snow is expected and travel could be difficult through Monday morning. This is March tournament snow — big snow possibilities that will vary greatly county by county.
Bomb Cyclone Warning: 200 Million People in the Threat Zone
Forecasters warn this storm could become a bomb cyclone by Sunday night, threatening nearly 200 million people with blizzard conditions, damaging ice, severe thunderstorms, and dangerous travel. A bomb cyclone occurs when central pressure drops at least 24 millibars in 24 hours or less. That rapid strengthening would generate an expansive and intense wind field affecting dozens of states.
Flight delays and cancellations from Sunday through Monday night could climb into the thousands. Major hubs including Denver, Chicago, Detroit, Atlanta, Pittsburgh, New York, Philadelphia, Boston, Washington, and Charlotte may all be affected.
Active Winter Storm Warnings Right Now by State
Active winter storm warnings through Friday cover Montana, Wisconsin, Michigan, Minnesota, and Maine, with more than three feet of snow forecast in some elevated areas. Mountain regions above 5,000 feet could receive up to five feet of snow, with blizzard conditions possible in parts of northeastern Minnesota.
| State | Warning Type | Key Details |
|---|---|---|
| Montana / Idaho | Winter Storm Warning | Up to 5 feet in mountains |
| Minnesota | Winter Storm Warning → Watch | 10-18 inches, 7PM Sat–7AM Mon |
| Wisconsin | Winter Storm Warning | 18-20+ inches possible |
| Michigan UP | Winter Storm Warning | 5-11 inches, gusts 40 mph |
| Wyoming | Winter Storm Warning | Through March 15 |
| Washington Cascades | Winter Storm Warning | 25 total inches, through March 14 |
| Maine / Northeast | Winter Storm Warning | 5-11 inches |
Ice Storm Warning Also Active — Freezing Rain Threat
An ice storm warning is active for portions of the Midwest. Accumulating ice is increasingly likely along and north of Interstate 94 across Wisconsin. A separate ice storm warning covers a corridor from Missouri through Illinois where freezing rain accumulations could reach dangerous levels before the system tracks east.
What to Do Before the Storm Hits Saturday Night
State, local, and tribal governments are leading preparedness efforts. Sign up for emergency alerts through your local National Weather Service office. Download the FEMA mobile app to receive real-time alerts. Remain indoors once conditions deteriorate and stay off roads to keep them clear for emergency responders.
Stock emergency supplies now, charge all devices Friday evening, fill your gas tank before Saturday afternoon, and avoid all non-essential travel from Saturday evening through Monday morning across the entire warned zone.
