https://www.boulderweather.com/series/severe-weather/Recent content in Severe Weather on BoulderWeather.comHugo -- gohugo.ioenBoulderweather.comFri, 26 Jun 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-hail-season/Fri, 26 Jun 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-hail-season/ <h2 id="boulder-sits-on-the-quiet-western-rim-of-north-americas-busiest-hail-corridor">Boulder Sits on the Quiet Western Rim of North America's Busiest Hail Corridor</h2> <p><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1012089347386563" crossorigin="anonymous"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-1012089347386563" data-ad-slot="1011306739" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> The Front Range urban corridor between Boulder, Denver, and Cheyenne is the most hail-prone stretch of the United States, a zone insurers and meteorologists have long nicknamed &quot;Hail Alley.&quot; The <a href="https://www.spc.noaa.gov/climo/online/">Storm Prediction Center's severe-weather climatology</a> shows the eastern Colorado plains catching seven to nine hail days in an average year — more than almost anywhere else in North America. Boulder sits on the western rim of that zone at roughly 5,430 feet, where the foothills both spawn the storms and, often, steer the worst of them onto the plains a few miles east of the city. That geographic position is the single most important fact about hail here: Boulder generates the convection but frequently dodges the largest stones, while the open-plains neighborhoods just east take the brunt.</p>