06/18/2026
I do not expect most to understand but let's go over what happened yesterday. First and foremost, the forecast was good. So why didnt we see this major outbreak? Well a couple things happened. First the morning storms were much stronger than anticipated and instead of a few cells we had a full blown MCS draw down some cooler air in northern Illinois. This took the exact path I had drawn for the supercells This delayed the airmass rebounding and kept lift just low enough to delay those tornadoes pushing them a bit further south. Once enough low level warmth and moisture moved far enough north, we saw the long tracked supercells.
Chasers, If you made the sit and wait play on my chaser map, you likely scored. If you chose the chase from Peoria, you may have scored but you had to work for it.
In Missouri it was a different story. We had plenty of heat, but we also had a bit of a cap. Shear was much higher than expected. Look at the radar image showing the tops of storms being blown off some 20 miles to the east southeast. So what happened? I feel the shear was actually too much for the updraft to sustain once it was impacted by the cap. This stops the upward momentum and can even knock clouds back down if the cap is strong enough. The shear then disconnected the updraft from the surface, killing the lifting mechanism. Even a little less shear would have allowed updrafts to sustain, but as it was, as soon as the tops got blown off, the storm was toast. The exception was actually expected and was in its usual spot at the tail end of the moisture inflow, which would have been southwestern missouri.
Many are still waking up to damaged or no homes, so before you cry bust, take a deeper look at what actually happened yesterday. A bust is when the ingredients do not come together, they certainly did yesterday...