4 tornadoes have been reported in central & northern Illinois.
A couple of tornadoes have been reported southwest of Champaign in Macon County so far:
Recently, Severe T'Storm Warnings have been issued south of Terre Haute, though Tornado Warning has been allowed o expired northwest of Vincennes, Indiana.
We still have Severe T'Storm Watch until 10 p.m. for Warren, Fountain, Tippecanoe & Montgomery counties as QLCS squall line moves north-northeastward.
Shallow surface CAPE of 500-1000 J/kg is found over the area with Mixed Layer CAPE only 300-500 J/kg.
So, buoyancy is not particularly deep, nonetheless, impressive 0-1 km helicity or spin of up to 325 m2/s2 & bulk shear values of up to 40 knots supports at least some severe risk in the area. 0-3 km helicity is up to an impressive 400 m2/s2. This, despite lack of solid, consistent sun limiting instability.
The shear & helicity values are actually less south of our area, but the instability is better & deeper there, which is why they have had the warnings so far.
However, there have been tornadoes in the area of lower instability, but higher helicity & shear in northern Illinois.
This said, risk of a couple/few severe storms with brief, short-lived, rain-wrapped tornado & wind risk will persist up to 10 p.m. given all of this & very moist airmass with temperatures near 70 & dew points near 68 with low LCLs (cloud bases).