Winter Weather Advisory Iowa, Wisconsin | Effective 03/14/2026 04:11

...MAJOR WINTER STORM TONIGHT INTO MONDAY MORNING... .A prolonged, high-impact winter storm affects the region tonight through Monday morning. Highest snow totals in excess of 12 to 18 inches are favored north of Interstate 90 with some locales north of Highway 10 approaching 24 inches. Along Interstate 90, a wintry mix of snow, freezing rain, and sleet makes it difficult to pin down exact snow and ice amounts, but impacts do warrant a Winter Storm Warning. Across northeast Iowa and southwest Wisconsin, snow does not look to arrive until Sunday afternoon, so the Winter Storm Watch is maintained for now. Increasing winds Sunday afternoon and night should result in whiteout conditions for exposed locales and an upgrade to a Blizzard Warning is likely once the exact threat area is determined. Regardless of exact snow amounts, expect major travel impacts regionwide with some roads possibly impassable, especially in wind-prone areas. * WHAT...For the Winter Weather Advisory tonight into early Sunday afternoon, mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around one tenth of an inch. Winds gusting as high as 40 mph. For the Winter Storm Watch Sunday afternoon into Sunday night, heavy mixed precipitation possible. Total snow and sleet accumulations between 4 and 9 inches and ice accumulations around a light glaze possible. Winds could gust as high as 50 mph leading to potential blizzard conditions. * WHERE...Portions of north central and northeast Iowa and southwest Wisconsin. * WHEN...For the Winter Weather Advisory, from 1 AM to 1 PM CDT Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday afternoon. * IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning commute. Gusty winds could bring down tree branches.