I was unaware that the NWS had hired Pythagoras of Samos.

Me hoping we get storms today The humble negative supercell composite:

Tornadic LP supercell over Greensburg, PA, 6/27/18. 📸Zach Frailey

Yikes ...

If these cells stay in equilibrium or the southern cell becomes dominant and absorbs the northern cell the result is the same. These two supercells pose a significant and potentially violent tornado risk in the near future.

Looks like Southern supercell has become dominant.

Love it when developing supercells pass within the high definition radius of TDWRs.

The cell with a PDS warning history is looking even more organized after local interaction with other popup cells.

Supercell near Black River Falls seems poised to put down a PDS tornado in the near future. I'd be monitoring this one.

Supercell cluster north of Cedar Rapids is also showing signs of imminent strengthening

The supercell to the northwest of Rockford is looking menacing.

Definitely a big yikes. Wisconsin has had a wild week.

If the cell north of Rockford Illinois continues to cycle and produce tornadoes which it likely will it's not going to be a good situation in the next hour or so. Its current trajectory takes it over numerous populated areas.

This cluster of supercells has exhibited wild evolution over the past 30 minutes. Velocity profile is nuts.

TORNADO IN PROGRESS NEAR HARRISON, ILLINOIS!!!!

Did they just form a triplet tor system? Is that what's happening here?

Severe Thunderstorm Risk 3/3 on this system of supercells. First time we've seen this today if I'm not mistaken.

This is about to be a massive issue...

NWS Milwaukee National Weather Service Ryan Hall, Y’all y'all may wanna see this. FRANKLIN, WI

Less than 2% all areas simply means above 0% most areas. We are out here slopmaxxing. Straight shower chasing. Becoming one with the mist.