Custer, SD Hail Storm – July 2026

A severe hail storm moved through Custer, SD on July 4, 2026, producing 2-inch hail and a radar-detected hail swath in the late afternoon. Radar alerts and spotter submissions together defined the storm's surface impact timeline.

What Happened

The storm developed over the Custer area during the late afternoon and produced two NWS radar-derived hail alerts tied to the same cell. The first alert issued at 2:25 PM CDT flagged a radar-detected hail signature consistent with large stones. A follow-up alert at 2:43 PM CDT tracked a persistent hail core as the cell continued across town. Spotter-sourced mPING entries anchored the surface timeline: observers submitted reports at 2:32 PM and again at 2:44 PM that were spotter-verified and matched the radar-detected swath. The sequence shows a concentrated period of intense hail production between roughly 2:25 PM and 2:45 PM as the cell translated through the Custer metro.

Damage Assessment

Surface impact reports for this event came primarily from spotters using the mPING platform. Those submissions located hail impact in and immediately around the Custer population center. Official local storm report feeds did not include separate structural damage narratives tied to this specific storm in the public listings. Field reports show concentrated strike points along the radar-identified swath rather than a broad, uniform pattern across the county.

Photographic and observer notes submitted with the mPING entries indicate localized vehicle panel dents and concentrated roof pitting in the immediate vicinity of the recorded strikes. Reports consistently placed impacts near central Custer and along the cell track recorded by NEXRAD. Where observers recorded cluster hits, damage patterns were patchy; some adjacent properties reported no visible impact while neighboring lots showed surface scarring on metal fixtures and gutters. No community-scale infrastructure failures were recorded in the local storm report stream for this event.

What Contractors Should Know

Focus initial canvass efforts on the mapped swath through central Custer and the adjacent vectors indicated by spotter timestamps. Start with photographic documentation using GPS-tagged images. Capture full-building context shots, close-ups of suspected impact points, and reference markers for scale. Prioritize roofing systems, vehicle fleets, skylights, HVAC units, and exposed metalwork in the direct strike corridor.

Inspect asphalt-shingle roofs for circular pitting on sun-exposed granules and check metal panels for concentrated denting along ridge lines and eaves. On vehicles, document hail dents with a measuring reference and note whether paint cracking or penetrations are present. Use the spotter timestamps to sequence damage observations along the east-west translation recorded by radar — properties closest to the 2:32 PM to 2:44 PM timestamps are most likely to show concentrated impact.