Winter Storm Iona Threatens Upper Midwest, Could Dump Up to 36 Inches

Winter Storm Iona is forecast to hammer the Upper Midwest this weekend, with forecasters warning it could dump exceptionally heavy snow — in some forecasts “pile up to 36 inches in some areas” — and prompting the National Weather Service to issue numerous winter storm warnings and winter weather advisories across the region.

“(KIMT) -- After a cloudy Thursday and early Friday, clouds will clear into Friday afternoon”

KIMT News 3

Newsweek frames the system as a potentially high‑impact event that follows an unseasonably warm spell and says National Weather Service products cover northeastern North Dakota through Minnesota, Wisconsin, and Michigan; local outlets likewise describe a major storm threat affecting much of Minnesota and Wisconsin.

KSTP

Forecasters say the event is driven by two systems and a southward track that will make timing and impacts complex: Newsweek reports “two, back-to-back winter storm systems will strike the region from Thursday night through early next week,” while MPR News and local TV coverage show the primary impact arriving Saturday evening into Sunday with steady accumulating snow through Sunday night.

Media outlets note model wobbling in the track that keeps forecast details fluid, but the consensus timing centers on Saturday night into Sunday as the main period of heavy snow and strong winds.

KTIV

Predicted snowfall amounts vary widely across the Upper Midwest: some forecasts and models cited by Newsweek say combined totals could reach “as much as 3 feet,”

“SIOUX CITY (KTIV) - A dangerous and impactful weather pattern is unfolding across the region”

KTIV

KIMT highlights a likely 6–12 inch snow band with localized 18–24 inch totals possible in southeast Minnesota and north Iowa, and the Milwaukee Journal Sentinel expects Milwaukee to largely miss the worst while calling for 5–8 inches locally and 12–14 inches or more farther north.

MPR and other outlets underscore that many places across southern Minnesota and central/southern Wisconsin could still see more than a foot.

Beyond heavy totals, forecasters warn of high winds, whiteouts, and storm impacts that could make travel treacherous and knock out power: National Weather Service products cited by Newsweek warn of “Whiteout conditions” and downed power lines from heavy snow on limbs;

KTIV and MPR report strong gusts (KTIV forecasts 30–50 mph gusts, MPR reported gusts up to 70 mph in western Minnesota) with visibility “reduced to near zero” and winter storm watches or blizzard warnings posted.

MPR News

KIMT and Newsweek both flag the risk of power outages and downed trees from wet, heavy snow.

Forecast uncertainty means residents should prepare: Newsweek warns the storm follows “unusually warm temperatures” that “may leave some people less prepared,”

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MPR News

MPR stresses the track wobble and wide range of outcomes, Milwaukee officials say a Friday update should refine southern Wisconsin expectations, and local outlets urge planning, hunkering down, and treating Sunday as a high‑impact First Alert Weather Day.

Newsweek

Several outlets explicitly advise limiting travel and preparing for extended outages or being forced to shelter in place.