CHICAGO, ILLINOIS — The SPC has upgraded Wednesday June 17 to a Level 4 of 5 Moderate Risk for parts of central Illinois and northwest Indiana, with the wording out of SPC described as blunt calling this an outbreak as strong tornadoes, wind gusts up to 80 mph, and hail the size of tennis balls are all on the table for one of the most significant severe weather days of the year.
Level 4 Moderate Risk Core Targets Central Illinois and Northwest Indiana
The Day 2 SPC severe weather outlook updated June 16 at 9:05 AM ET valid Wednesday June 17 shows a Level 4 purple Moderate Risk centered directly over central Illinois and northwest Indiana, covering a zone between Chicago, St. Louis, Indianapolis, and Fort Wayne. This is the second highest risk category available on the SPC scale and has been issued only two days out, reflecting exceptional forecaster confidence in a high-end outbreak scenario.
A Level 3 Enhanced Risk in red surrounds the Moderate core, covering Kansas City, St. Louis, Indianapolis, Columbus, Cincinnati, and Louisville. Level 2 orange shading extends further outward through Des Moines, Madison, Grand Rapids, Detroit, Cleveland, and Pittsburgh.
Strong Tornadoes the Primary Concern Along the Warm Front
The biggest concern for Wednesday centers on strong tornadoes developing especially where storms ride along the warm front and stay alive for miles. Supercells tracking along warm front boundaries tend to maintain their structure and rotation over longer distances, increasing the potential for significant and long-track tornadoes across the Level 4 zone.
Wind gusts up to 80 mph and hail the size of tennis balls compound the all-hazards nature of Wednesday’s outbreak setup across central Illinois and northwest Indiana.
Entire Midwest Corridor Needs to Be on High Alert Wednesday
The Level 1 orange zone extends from Wichita and Tulsa through Minneapolis and all the way toward Pittsburgh, putting tens of millions of residents across the broader Midwest within the severe weather footprint for Wednesday. This is a day that demands full preparation across the entire highlighted region.
Residents across central Illinois and northwest Indiana specifically should treat Wednesday as a life-safety day and have tornado shelter plans finalized before the outbreak window opens.
Stay with GordonRamsayClub.com for the latest updates.
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