Grover, CO Hail Storm – May 2026

A severe hail storm tracked through Grover, Colorado on May 30, 2026, producing 2.75-inch stones and spotter-verified structural damage in the late afternoon.

What Happened

NWS alerts were issued from 3:17 PM MDT through 6:11 PM MDT, with 11 separate messages covering the storm's evolution. The first alert at 3:17 PM MDT was an NWS warning-only notification for 1-inch hail. Dual-polarization radar detections followed and escalated through the late afternoon, with the largest radar return recorded around 3:55 PM MDT. Multiple radar-based hail detections between about 3:18 PM and 5:43 PM MDT tracked variable hail sizes along the storm path.

Spotters and local emergency management provided ground observations tied to the radar timeline. Kimball County emergency management reported golf ball–sized hail with accumulating hail and localized flash flooding in rural areas around 4:00 PM MDT. Local storm spotters filed delayed reports of baseball-sized hail roughly 6.3 miles southeast of Bushnell, with damage to multiple windows reported at 4:33 PM MDT and corrected at 4:53 PM MDT. Those spotter entries align with the larger radar returns in the same time window.

Damage Assessment

Field reports indicate concentrated physical impact near the Bushnell area southeast sector and in portions of rural Kimball County. Spotters described multiple destroyed windows at the 6.3 miles SE Bushnell location. Kimball County reports describe accumulating hail leading to localized flash flooding on rural roadways and fields.

Observed impacts include: shattered glazing at one residence 6.3 miles SE of Bushnell; widespread broken window reports tied to the single localized baseball-sized hail report; and surface runoff and ponding associated with hail accumulation reported by county emergency management. Radar-detected intense cores coincided with those ground reports, indicating the surface impacts were collocated with the strongest upper-air reflectivity. No other specific structural collapse or casualty reports were included in the submitted local storm reports.

Inspectors arriving on site should prioritize residential glazing and water entry points in the Bushnell SE sector. In the Kimball County rural footprint, assess drainage and evidence of short-duration inundation where observers noted accumulating hail. Photographic documentation of broken glazing, dents in metal surfaces, and any visible roofing loss will be critical for claims and repair scope.

What Contractors Should Know

Prioritize the following field actions in the Grover metro and the Bushnell SE sector. First, perform a safe-access exterior assessment for broken windows and immediate water intrusion. Spotter reports cite multiple destroyed windows at a known coordinate 6.3 miles SE of Bushnell and place that location at the top of the triage list. Secure tarping or temporary glazing where interior exposure is present.