Cheyenne, WY Hail Storm – June 2026

A hail storm tracked through Cheyenne, WY on June 20, 2026, producing 2.5-inch hail and triggering 21 NWS alerts. The event ran from mid-afternoon into late evening, with alternating radar-detected cells and spotter-verified pockets of larger stones.

What Happened

Radar first flagged hail-producing returns in the Cheyenne metro around mid-afternoon. At 3:12 PM MDT a dual-polarization radar detection indicated 1.25-inch hail. A spotter report shortly after, at 3:40 PM MDT, measured roughly 1.00-inch hail near the metro fringe.

NWS warning areas covered repeated cells from late afternoon into the evening. Between 6:01 PM MDT and 10:46 PM MDT the NWS issued a series of 21 alerts spanning the metro and nearby rural corridors. Several later radar-derived alerts again showed enhanced returns consistent with greater than 1-inch hail, including radar detections in the 8:26 PM MDT to 10:46 PM MDT window.

Spotter and mPING reports anchored the surface picture. At 7:09 PM MDT observers reported quarter-sized hail east of Carpenter. At 7:16 PM MDT the Spotter Network logged 1.5-inch ping-pong ball sized hail roughly 11 miles south-southeast of Burns, placing the core near the Burns–Hereford corridor. Multiple mPING submissions at 8:21 PM MDT recorded half-dollar size hail in the Cheyenne area. At 9:21 PM MDT an mPING report described hen-egg sized hail of 2.25 inches, spotter-verified near the eastern portion of the metro. Those spotter reports align with the late-evening radar hits and the cluster of NWS warnings over the same corridors.

Damage Assessment

Field observations and radar detections show concentrated impacts along the Burns–Hereford corridor and east of Carpenter. Spotters recorded multiple locations with quarter- to half-dollar hail earlier in the evening, and repeated half-dollar reports at 8:21 PM MDT indicate a localized swath of moderate surface impact in that area.

The 7:16 PM MDT Spotter Network reports place ping-pong sized hail 11 miles south-southeast of Burns and 6 miles north-northeast of Hereford, which corresponds with overlapping NWS warning areas for that corridor. The 9:21 PM MDT mPING submission documents larger stones near the eastern metro, reflecting a later, more concentrated pulse recorded by dual-polarization radar.

No large-scale, system-wide damage reports were submitted to the local storm reporting channels for Cheyenne. The available ground-truth is clustered by time and location, which suggests the event produced narrow swaths of greater hail accumulation rather than uniform damage across the entire warning area.

What Contractors Should Know

Prioritize inspections along the Burns–Hereford corridor and the stretch east of Carpenter where spotter reports concentrated. Begin rooftop assessments at the locations and times referenced by spotters: the 7:16 PM MDT ping-pong reports and the 8:21 PM MDT half-dollar cluster. Use driving inspections to look for isolated clusters of impact marks rather than assuming even distribution across neighborhoods.