05/08/2026
This is where it all began
ON THIS DATE
May 8, 2017
Portions of the Denver Metro were hit by one of the most destructive hailstorms in Colorado history.
A powerful supercell thunderstorm developed over the foothills west of Denver during the early afternoon and rapidly intensified as it moved east northeast across Jefferson County into the western and northwestern portions of the metro. Areas including Lakewood, Wheat Ridge, Golden, Arvada, and northwest Denver took the brunt of the storm.
This wasn’t your average pea sized hailstorm either. The storm produced hail up to baseball size, around 2.75 inches in diameter in some locations, and the timing could not have been worse.
It slammed into the metro during the late afternoon commute, leaving thousands of vehicles exposed on roads and highways. Windshields were shattered, roofs destroyed, siding stripped, skylights broken, and businesses heavily damaged. Colorado Mills Mall alone suffered catastrophic roof damage and was forced to close for months.
One of the wildest parts of the storm was how much hail accumulated. Some areas looked like a full blown winter storm in May with drifts of hail covering roads, parking lots, and neighborhoods. If you lived here at the time, you probably remember the pictures that looked more like January than severe weather season.
Financially, this became one of the costliest weather disasters in Colorado history at the time. Damage estimates eventually climbed to well over $1 billion, with later analyses putting insured losses closer to $2.3 billion. There were roughly 167,000 auto insurance claims and more than 100,000 homeowner claims tied to this single storm.
Meteorologically, this was a textbook Front Range “Hail Alley” setup. Strong instability, steep lapse rates, favorable wind shear, and upslope flow near the foothills helped create an intense rotating supercell capable of producing giant hail for an extended period of time. Radar imagery even showed a pronounced BWER, or bounded weak echo region, which is often associated with extremely strong updrafts and large hail production.
This storm is still considered one of the benchmark severe weather events in Colorado history and serves as a reminder that severe weather season along the Front Range means business. It only takes one storm in the wrong place at the wrong time.
Preparation > panic, you precious little hail magnets. 🌩️🧊
