Under-mixing.
It always seems to be the issue in these set-ups.
Edit: Looks like the 0z and 12z HRRR 'only' had a high of 91, so it seems overzealous DVN was just being its usual self.
It's unfortunate that the ridge center trended east over the past several days.
We could have had a shot at 100 locally with it better positioned further west, and we also likely would have prolonged the heat wave as well prior to ROF potential.
the 2026 illinois tornado total was at 134 prior to yesterday. combine yesterday with last thursday’s info still incomplete, and we’re probably right at the record currently.
Can't get anyone to cover me tomorrow, so I'll be missing chasing this one, just as I missed last Thursday's event.
Time for some reverse-jinxing to pull stuff north once again, to make it interesting locally.
First 90°+ day of the year on Wednesday at ORD and MDW, with a high of 91° at both locations.
...2026 90°+ Day Tally...
3 - ARR
1 - ORD
1 - MDW
1 - RFD
1 - PWK
1 - LOT
1 - UGN
0 - DPA
Ended up having a supercell quickly develop over DuPage County last evening, which then moved through ORD. There was a transient wall cloud at times with it as it approached from the southwest, as the storm interacted with an OFB and briefly tried to be interesting.