Widespread Watches Issued: The National Weather Service has issued severe thunderstorm watches covering central and northern Minnesota, southeastern Minnesota, most of Wisconsin, and eastern Iowa, set to expire by 8 p.m. CDT on Wednesday.
Two Distinct Storm Rounds: The region will experience two main periods of storm activity:
Overnight/Morning (Midnight – 5 AM CDT): A squall line developing across the Dakotas and moving into Western Minnesota, primarily posing a threat of damaging straight-line winds. Showers and thunderstorms are expected to reach the Twin Cities metro between 2 AM and 5 AM.
Afternoon/Evening (2 PM – 10 PM CDT): A second round of storms is anticipated to develop along the I-35 corridor, intensifying as daytime heating combines with lingering atmospheric boundaries.
Primary Threats: The afternoon/evening storms carry the highest risk of large hail (up to baseball size/2 inches), isolated tornadoes, and damaging wind gusts up to 65 mph. The threat may transition from discrete cells (hail/tornadoes) to more organized wind damage as storms push eastward into Wisconsin.
Risk Levels: Much of Minnesota, including the Twin Cities metro, and most of Wisconsin are under an Enhanced Risk (Level 3 out of 5) for severe thunderstorms. Central Minnesota faces a Slight Risk (Level 2), while Western Minnesota is under a Marginal Risk (Level 1).
Why This Matters: The potential for large hail, destructive winds, and tornadoes could lead to significant property damage, power outages, and dangerous travel conditions. Understanding the timing and specific threats is crucial for personal safety and preparedness.
Severe weather is set to sweep across the Upper Midwest throughout Wednesday, June 10, 2026, presenting a complex forecast with varying threats across the region. The day begins with an initial round of storms originating from the Dakotas, organized into a squall line. This first wave, expected between midnight and 5 AM CDT, will primarily impact Western Minnesota with a focus on damaging straight-line winds. These storms are forecast to reach the Twin Cities metro in the early morning hours, around 2 AM to 5 AM.
A critical factor for the afternoon forecast hinges on the aftermath of these morning storms. If widespread cloud cover and lingering rainfall persist through Wednesday afternoon, it could limit the atmospheric instability needed for severe weather development, potentially shifting the most significant threats further east into Wisconsin. Conversely, a quick recovery to sunshine and clear skies would dramatically increase the severe weather potential across Eastern Minnesota before storms advance into Wisconsin.
The second, more impactful round of storms is projected to ignite between 2 PM and 5 PM CDT along and near the I-35 corridor. These initial developments may manifest as discrete cells, capable of producing very large hail (up to 2 inches in diameter, potentially baseball-sized) and isolated tornadoes. As these storms grow and organize, pushing eastward into Wisconsin from 5 PM to 10 PM CDT, the threat profile is expected to transition towards stronger and more widespread damaging wind gusts, reaching up to 65 mph. The Storm Prediction Center has highlighted this enhanced risk (Level 3 out of 5) for a broad swath of the region, including the Twin Cities and much of Wisconsin, signifying the potential for numerous severe storms.
Beyond the immediate storm threat, temperatures will remain summer-like, with highs in the upper 80s accompanied by very humid conditions. Cooler and quieter weather is anticipated towards the end of the week, with Thursday bringing clouds and scattered showers and Friday offering a return to sunshine and highs near 80 degrees. Residents are advised to stay continuously updated with local weather authorities throughout the day as the forecast refines in real-time.
Q: Which areas are under a severe thunderstorm watch?
A: Severe thunderstorm watches have been issued for central and northern Minnesota, southeastern Minnesota, most of Wisconsin (excluding some far northeastern counties), and eastern Iowa (along the Wisconsin and Illinois borders).
Q: What are the main threats from these storms?
A: The primary threats include scattered large hail (up to baseball size/2 inches), damaging wind gusts up to 65 mph, and isolated tornadoes.
Q: When are the storms expected?
A: There are two main rounds: an overnight/morning round (Midnight – 5 AM CDT) primarily for Western Minnesota, and an afternoon/evening round (2 PM – 10 PM CDT) impacting Eastern Minnesota, the Twin Cities metro, and Wisconsin.
Q: What is the biggest uncertainty in the forecast?
A: The biggest uncertainty is how much cloud cover and leftover rain persist from the morning storms. This will significantly influence the instability and severity of the afternoon storms across Eastern Minnesota.
Stay Informed: Continuously monitor local weather alerts and forecasts, especially if you are in an area under an Enhanced (Level 3) or Slight (Level 2) risk.
Prepare for Hazards: Be ready for potential impacts from large hail, damaging winds, and isolated tornadoes. Secure outdoor objects, know where to take shelter, and have a way to receive warnings.
Understand Timing: Be aware of the two distinct rounds of storms – one overnight/morning and another in the afternoon/evening – and plan your day accordingly, especially if traveling.
Impact on East vs. West: Recognize that the severity of afternoon storms in Eastern Minnesota largely depends on morning atmospheric conditions. Have a plan regardless of the specific scenario.
Safety First: Prioritize your safety and the safety of your family. If a severe thunderstorm warning is issued for your area, take immediate action.
The severe weather outlook for the Midwest is complex and dynamic. Do you think the morning storms will significantly impact the intensity of the afternoon severe weather? Let us know your thoughts and preparations in the comments below!
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Live updates: Severe thunderstorm watches issued for MN, WI | FOX 9 Minneapolis-St. Paul{target="_blank"}
Forecast First Alert: Timing out rounds of severe storms Wednesday afternoon, evening - KSTP.com 5 Eyewitness News{target="_blank"}
Severe weather threat to impact Western Wisconsin Wednesday - WEAU{target="_blank"}
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