Northern Plains and Upper Midwest Including North Dakota, South Dakota, and Minnesota Facing Significant Two Day Severe Weather Outbreak as SPC Eyes 30 Percent Risk Upgrade for Wednesday June 10

BISMARCK, NORTH DAKOTA — A significant and potentially historic two-day severe weather outbreak remains on track for the Northern Plains and Upper Midwest on Tuesday June 9 and Wednesday June 10, 2026, with all significant severe weather hazards possible on both days and the SPC explicitly mentioning a potential upgrade to 30 percent severe probabilities for Wednesday if models continue to stay consistent.

SPC Slight Risk Covers North and South Dakota Tuesday June 9 with All Significant Hazards

The SPC Severe Weather Outlook for Tuesday June 9, 2026 shows a Slight Risk zone covering a broad area across North Dakota, South Dakota, and into Wyoming, with the threat centered over the northern and central Plains corridor. All significant severe hazards including large hail, damaging winds, and tornadoes remain possible across the Tuesday threat zone as the first round of the two-day severe weather episode targets the Dakotas and surrounding Northern Plains communities. Residents across Bismarck, Pierre, Rapid City, and surrounding areas should treat Tuesday as an active and dangerous severe weather day requiring full preparedness.

Wednesday June 10 Slight Risk Shifts East Into Minnesota and Iowa with Upgrade Possible

The SPC Severe Weather Outlook for Wednesday June 10, 2026 shows the Slight Risk zone shifting eastward into Minnesota, Wisconsin, and northern Iowa as the system progresses across the Upper Midwest. The Wednesday threat zone covers a broader geographic footprint extending from North Dakota eastward through Minneapolis and toward the Great Lakes corridor. Critically, the SPC has specifically mentioned that an upgrade to 30 percent severe probabilities could occur in the next outlook for Wednesday if model guidance continues to remain consistent, signaling that forecasters believe the current Slight Risk designation may be too conservative for the Wednesday event.

All Significant Hazards Remain Possible on Both Days Across Northern Plains and Upper Midwest

Forecasters are emphasizing that all significant severe weather hazards remain possible across the Northern Plains and Upper Midwest on both Tuesday and Wednesday, meaning large hail, significant damaging winds, and tornadoes are all on the table throughout the two-day severe weather window. The combination of a robust high-amplitude trough, strong upper-level jet stream energy, and returning low-level moisture creates a genuinely dangerous environment capable of producing significant severe weather events across the region on consecutive days.

Residents Across North Dakota, South Dakota, Minnesota, and Iowa Should Prepare Now

With a significant two-day severe weather outbreak targeting the Northern Plains and Upper Midwest June 9 to 10, 2026, and a potential upgrade to 30 percent severe probabilities looming for Wednesday, residents across North Dakota, South Dakota, Minnesota, and Iowa should begin preparations immediately and monitor updated SPC and NWS outlooks closely through the weekend ahead of next week’s dangerous setup.

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