Strong EF-2 Tornadoes Very Large Hail and Destructive Winds Targeting North Dakota Including Bismarck Fargo and Grand Forks Tuesday June 9th With Upgrade Possible
NORTH DAKOTA — A potent and dangerous severe weather setup is on tap for North Dakota Tuesday June 9th, with strong EF-2 or greater tornado potential, very large hail, and destructive straight-line winds all in the forecast from both supercells and line-embedded QLCS circulations.
The current outlook places a Level 3 ten percent tornado probability hatched zone covering the full width of North Dakota from Williston through Bismarck, Fargo, and Grand Forks, with a Level 2 five percent zone surrounding it and the threat expanding northward into portions of Saskatchewan and Manitoba Canada. A Moderate Risk Level 4 upgrade is being discussed if confidence in longer-sustained supercell activity increases before Tuesday.
Level 3 Ten Percent Tornado Zone Covers All of North Dakota With EF-2 Potential
The hatched Level 3 ten percent tornado probability zone is one of the more significant severe weather designations seen this season, covering the entire width of North Dakota and indicating strong forecaster confidence in multiple tornado-producing storms Tuesday. EF-2 or stronger tornado potential means any tornadoes that touch down could cause significant structural damage to well-built homes, snap large trees, and create life-threatening conditions across the affected corridors.
Both discrete supercells in the early stages and QLCS embedded circulations as storms upscale are the two primary tornado-producing mechanisms for this event.
Very Large Hail and Destructive Straight-Line Winds Add to the All-Hazards Threat
Beyond the tornado threat, very large hail and destructive straight-line winds round out a full all-hazards severe weather event for Tuesday across North Dakota. The combination of supercell and linear storm modes means different hazard types will dominate at different times during the event, requiring residents to remain weather-aware from storm initiation through the overnight hours.
The threat expands northward across the border into Saskatchewan and Manitoba Canada as the system tracks northeastward through Tuesday.
Level 4 Moderate Risk Upgrade Possible if Supercell Confidence Increases
Forecasters are explicitly flagging the potential for a Level 4 Moderate Risk upgrade ahead of Tuesday’s event if model guidance increases confidence in sustained supercell activity across the risk zone. Residents across all of North Dakota from Williston through Bismarck, Fargo, and Grand Forks must have shelter plans and multiple warning alert methods in place before Tuesday afternoon. Stay with NapervilleLocal.com for the latest weather updates and local forecast coverage.
I’ve lived in Naperville long enough to see how quickly our community changes — from new developments downtown to sudden shifts in our Midwest weather. Reporting on Naperville news and daily forecasts gives me the chance to keep neighbors informed about what really matters. My goal is simple: deliver clear, timely updates so you always know what’s happening in our city and what to expect from the skies above.