Record Rainfall Triggers Widespread Flooding and Mudslides in Southern Minnesota

Key points

• Spring Valley recorded 8.17 inches of rain, with Lanesboro and Houston also exceeding 7 and 8 inches respectively, according to National Weather Service reports.
• State Highway 16 was closed for several hours near Lanesboro and Whalan after a hillside slid, depositing mud and debris across the road; crews spent nine hours clearing the area.
• Mayor Justin Mlinar reported that all streets in Spring Valley were closed by 6 a.m. Saturday, with some reopening by mid-morning as floodwaters receded.
• The Cedar River in Austin was forecast to reach moderate flood stage, prompting street closures and police warnings against bypassing barricades.
• No injuries were reported, but officials in New Richland offered sandbags and lodging assistance to displaced residents.

Background

This event follows a pattern of severe weather in the region, including flash flooding in southern Minnesota in early July 2026. While unrelated to recent international events like the Nagoya floods or Hurricane Lala, the local impact mirrors the severe weather risks highlighted in recent forecasts for the Midwest.

How outlets are covering it

MPR News emphasized the immediate impact on urban infrastructure, highlighting street closures in Spring Valley and Austin, as well as the closure of the Old Barn Resort golf course. The Post Bulletin provided a more granular breakdown of rainfall totals across multiple counties, noting that Houston received 8.29 inches, slightly more than Spring Valley. Both sources agreed on the severity of the mudslide on State Highway 16, but the Post Bulletin detailed the nine-hour cleanup effort, while MPR News focused on the broader regional impact on river levels and highway closures.

Why it matters

The flooding highlights the vulnerability of southern Minnesota’s infrastructure to extreme precipitation, particularly in areas with poor drainage and steep terrain. The incident underscores the need for robust emergency response and public compliance with road closures to prevent accidents and ensure safety during severe weather events.

What to watch

Officials will continue monitoring river levels, particularly the Cedar and Root Rivers, for potential further rises. MnDOT will maintain monitoring of roads along waterways in Fillmore, Houston, and Winona counties as rain continues and water drains into waterways. Residents are advised to stay informed through local news and weather updates.