1800Z Update

Complex situation taking shape. Tornado warnings across south central IA have yielded some reported wall clouds, but no tornadoes at this time. Most of the activity from Toldeo, IA back to St. Joseph, MO is starting to form into a line with some embedded supercells.

Storms further north are a more isolated in nature in extreme SE MN. These isolated cells were located from near Charles City, IA NE up towards Winona and Eau Claire, WI. Tornado warnings up here are yielding some 1" hail and strong winds, but tornado reports yet.

I honestly haven't had a lot of time to look at anything. Quick view of simulated radar shows WRF-NMM using Kain-Fritsch convective scheme breaks out convection around 10/11AM this morning across south central IA. However, it does not have current convection over SE MN. NMM-WRF from SPC places leftover convection from last night into south central IA early morning, but it doesn't fire new convection til late afternoon.

LSE/La Crosse 12Z BUFKIT sounding shows supercells as storm mode around 21Z/4PM with current mesonanalysis showing 300m2/s2 over Winona, MN. East of hwy 218 in IA/MN, 0-1km is over 100m2/s2, supportive of supercells. CIN is basically gone with CAPE values along IA/IL and MN/WI border around 1000J/kg. Further west into WI/IL go up to around 1500J/kg. While CAPE is not as enormous as yesterday, the saying high shear/low CAPE could be bad news later this afternoon.

1837Z/1:37PM CDT

Unrelated weather note:
New weather station is here and have climbing gear as well. I wouldn't be doing that today with strong winds and radar operations.