Eastern Iowa, Northern Illinois, and Southern Wisconsin Face Regional Tornado Outbreak This Afternoon With Intense Tornadoes and All Hazards Possible

CEDAR RAPIDS, IOWA — A regional tornado outbreak is unfolding across eastern Iowa, northern Illinois, and southern Wisconsin this afternoon and evening, with tornado warnings already issued in southern Iowa this morning and forecasters describing this as the most favorable trough shape for severe weather they have tracked in several months.

Tornado Warnings Already Issued in Southern Iowa This Morning

Active tornado warnings are in place across southern Iowa this morning associated with a wind bag ahead of the main event. The outflow boundary laid down by this morning’s complex will interact with peak afternoon heating and a potent upper-level trough ejecting across the Upper Midwest, creating the setup for intense supercell development by early afternoon.

The HRRR 500mb wind analysis from the 12z model run shows a powerful jet streak diving into the Midwest with the strongest wind speed values concentrated directly over the eastern Iowa through northern Illinois corridor.

HRRR Model Highlights All Hazards Threat Across the Midwest

The HRRR model identifies a widespread severe weather outbreak across the circled all-hazards threat zone covering eastern Iowa, northern Illinois, and southern Wisconsin. Damaging winds are flagged as the main threat within the outbreak zone, but intense tornadoes are explicitly possible across the same corridor this afternoon and evening.

Forecasters are calling this the most favorable trough shape chased in several months, underscoring the high-end nature of today’s severe weather setup across the Upper Midwest.

Potent Trough Ejects Across Upper Midwest at Peak Heating

The timing of the upper-level trough ejection coinciding with peak afternoon surface heating creates a worst-case scenario for storm intensity across the outbreak zone. Residents across eastern Iowa, northern Illinois, and southern Wisconsin should treat this as an immediate life-safety event.

Multiple ways to receive warnings are essential given the rapidly evolving nature of this outbreak through the afternoon and evening hours.

Stay with GordonRamsayClub.com for the latest updates.