Slight Risk of Severe Weather. Valid 7AM Thursday through 7AM Friday. What: Isolated to scattered severe storms; When: Thursday Night/Early Friday morning, generally from 12AM - 9AM Friday.; Where: Areas along and west of I-55, especially for NW areas (the threat could continue east). Four bars indicate individual hazard threat levels as follows: Damaging wind - level 2 of 5, Tornadoes - level 2 of 5, Large Hail - level 2 of 5, and Flooding Rain - not a threat. Safety messages highlight the following: Stay weather aware, Have multiple ways to receive warnings.