Illinois shattered an extraordinary weather milestone on March 10, 2026, when a monumental 6.6-inch hailstone weighing over a pound slammed into Kankakee, Illinois, officially resetting the state’s severe weather record. Confirmed by the National Oceanic and Atmospheric Administration’s State Climate Extremes Committee on September 1, the colossal chunk of ice underscores an unusually volatile meteorological year marked by record-breaking tornado tallies across the region.
Anatomy of a Record-Breaking Ice Block
When the storm system finally cleared, researchers at the Northern Illinois University Meteorology Department secured a frozen artifact that rewrote local climatology. According to NOAA reports, the colossal specimen measured 6.603 inches along its largest axis, tipped the scales at 19.65 ounces—amounting to 1.228 pounds—and boasted a volume of 38.697 cubic inches. Dr. Victor Gensini of Northern Illinois University formally documented the stone on March 18 before submitting the findings to the SCEC for rigorous verification.
This massive chunk easily eclipses Illinois’s previous record holder, a 4.75-inch hailstone discovered near Minooka, Illinois, on June 10, 2015. While softball-sized hail hovering around 4 inches across remains a rare meteorological spectacle, this Midwest monster pushes well past conventional bounds. For perspective, the all-time U.S. record for hail diameter sits at 8 inches, logged by a stone that struck Vivian, South Dakota, in 2010.
A Continental Superstorm and Regional Devastation
The record-shattering hail was born from an aggressive, high-energy storm system that stretched all the way from Mexico to Canada on March 10, carving a destructive path characterized by extensive swaths of hail exceeding 5 inches in diameter.
Among those tornadoes, a destructive EF3 twister struck Kankakee, resulting in two fatalities and underscoring the lethal power packed inside the parent thunderstorm. Manual radar analysis combined with direct field observations later allowed meteorologists to map out the precise trajectory of the maximum hail size across Kankakee County, pinpointing the historic drop right near the heart of the city.
A Relentless Season for Midwest Severe Weather
The Kankakee ice drop arrives during what has already proven to be an unprecedented year for atmospheric violence across the Prairie State. Illinois shattered its historical annual tornado record in 2026, logging more twisters than in any previously recorded year in state history—surpassing the 200-tornado threshold.
The State Climate Extremes Committee maintains official hail diameter records for only nine states nationwide: Alabama, Colorado, Illinois, Kansas, Nebraska, Oklahoma, South Dakota, Texas, and Vermont. Have you ever witnessed hail large enough to cause severe structural damage in your neighborhood? Share your experiences in the comments below.
