Blog Article
June 11, 2026 Severe Weather Recap: Illinois Tornadoes
A complete recap of the June 11, 2026 severe weather event, including the PDS Tornado Emergency in Illinois, 90 mph winds, and what is coming next.
The June 11 Severe Weather Outbreak: What Happened in Illinois
Y'all, yesterday was a heavy day. When the National Weather Service issues a Particularly Dangerous Situation Tornado Emergency, you know things have escalated. That is exactly what happened across central and northern Illinois on June 11, 2026.
We knew it was going to be a long night across the Midwest. The atmosphere had the ingredients, and it delivered exactly what the data suggested. Here is a look back at how the day unfolded.
How the Storms Escalated
The day started with localized supercells. By mid-morning, we already had a radar-confirmed tornado with a debris signature near Nehawka, Nebraska. But the real escalation happened as storms moved into the Illinois, Iowa, and Missouri tri-state area. Updrafts exploded in the afternoon heat. Cloud tops punched all the way up to 60,000 feet.
By the evening, the situation in Illinois turned dire. A PDS Tornado Emergency went out for LaSalle, Livingston, and Grundy counties. Storm chasers and emergency managers reported large, multi-vortex, and wedge tornadoes on the ground near Streator, Dwight, and Kinsman. We saw reports of debris lofted into the air and catastrophic structural damage in those areas.
It was not just tornadoes. Essex, Iowa, recorded a massive 90 mph wind gust. North-central Missouri picked up 7 inches of rain, causing extensive flash flooding.
The Transition to a Wind Threat
As the night went on, the storms merged into a high-speed squall line that swept into the Great Lakes. This is a classic progression for summer storm systems. That line knocked out power to over 215,000 folks in Illinois and another 30,000 in Michigan. The severe threat even reached Long Island, where Suffolk County saw a Destructive Severe Thunderstorm Warning for 80 mph radar-indicated gusts.
Here are the key stats from yesterday:
- PDS Tornado Emergency issued for LaSalle, Livingston, and Grundy Counties in Illinois.
- Catastrophic damage reported from wedge and multi-vortex tornadoes near Streator and Dwight, Illinois.
- 90 mph wind gust measured in Essex, Iowa.
- 7 inches of rain caused extensive flash flooding in North-Central Missouri.
- 215,000+ power outages across Illinois.
Forecast vs. Reality
In our previous update, we warned about a long night across Illinois and Indiana. The forecast was spot on. The transition from discrete supercells to a bowing squall line happened right on schedule. The severity of the tornadoes in northern Illinois was at the absolute top end of what the environment could produce. Warning lead times were critical yesterday, and emergency managers did an incredible job relaying ground truth to the weather service.
What Comes Next
Now we have to look ahead. Today, the East Coast is dealing with a Slight Risk of severe storms, mainly for 60 mph wind gusts from New York down to Washington, D.C.
But Saturday is the day that really has my attention. The Midwest is reloading. The Storm Prediction Center has an Enhanced Risk over eastern Kansas, northern Missouri, and west-central Illinois. We are looking at a hatched risk for 75 mph winds and hailstones over 2 inches across. The Weather Prediction Center also has a Slight Risk for excessive rainfall in the same general area.
Bottom Line
Yesterday showed us why we respect the PDS label. When the atmosphere has the right ingredients, it does not hold back. Take today to clean up, check on your neighbors, and get your weather radios ready for Saturday. We have another busy weekend ahead.