andyhb

The 12z Euro… holy moly.

As of right now, this looks like an outbreak over potentially a large expanse of real estate, with both strong tornadoes and a derecho possible. I’m amazed at how strong the LLJ is across many models right now.

Agreed, it looks like another potentially widespread and significant severe weather episode with very strong flow overlapping high moisture. Tuesday could have some potential too.

This is hands down one of the best tornado videos I have ever seen. Hopefully a long format one is to follow.

Washburn IL, Streator IL, and Kouts IN tornadoes all preliminarily rated EF3.

Huge wedge tornado reported NE of Kouts per Isaac Polanski.

Tornado down heading for Schaumburg @SchaumburgStormer!

That is a major tornado in the middle of the Lake County burbs, that is not going to be good.

Giant tornado near Streator IL per Colin Davis. Environment near those two supercells in central IL is extreme, STP of 10, SCP of 40, 3000+ MLCAPE and 500+ ESRH.

Violent tornado in progress near Metamora IL, amazing low reflectivity debris ball.

Developing Edina MO cell looks like a candidate for a long-lived supercell. Got that kidney bean shape.

Via Clint Hendricks. Apparently became a large stovepipe and then a cone after this.

Very reliable report here.

Tornado in progress near Lucerne MO, TDS, report from Colin Davis.

Central/southern part of the Chicago metro is getting rocked. Seeing a lot of 80-90 mph outbound bins from KLOT not too far off the deck.