Lemmon, SD Hail Storm – July 2026

Lemmon, SD — July 2, 2026: A concluded multi-zone hailstorm struck the Lemmon metro area on July 2, producing a peak hail size of 3.43 inches and repeated radar-detected hail signatures.

What Happened

Storm activity began in the pre-dawn hours and continued intermittently through late evening, generating 12 NWS alerts tied to the same storm complex. The first alert issued at 5:17 AM CDT detected 1.76-inch hail by dual-polarization radar. A separate NWS warning-only alert followed at 5:18 AM CDT reporting 1.00-inch hail. Midday activity produced additional radar-detected returns around mid-morning and early afternoon, including a 1.22-inch detection at 12:03 PM CDT.

The system intensified in the late afternoon and early evening. Between about 5:30 PM CDT and 8:53 PM CDT, multiple dual-polarization radar detections reported hail diameters ranging from roughly 1.26 inches to 2.35 inches, with notable 2-plus-inch returns at 6:21 PM CDT and 7:07 PM CDT. The final NWS alert associated with this event issued at 10:10 PM CDT. Most alerts were supported by dual-polarization radar hail detection. One alert in the early morning record was issued on warning-only basis without a radar-derived size noted.

Damage Assessment

Radar-detected hail signatures across the Lemmon area included a spectrum of sizes. Hail between 1.0 inch and 2.5 inches commonly causes visible denting to vehicle bodywork, fractured or pitted windshields, and localized roof shingle damage. Hail above roughly 2 inches increases the risk of broken windows, skylight punctures, and concentrated shingle loss, particularly on older or already weathered roofs.

Given the recorded detections, expect concentrated property impacts along the storm path through the Lemmon metro. Vehicle hoods, exposed HVAC units, and rooftop-mounted equipment such as solar panels are at heightened risk where larger radar returns occurred. Field verification is necessary to map exact impact points and to confirm any structural penetration or glazing failures.

What Contractors Should Know

Inspect roofs for granule loss, bruising, and displaced or split shingles in zones that recorded 1.5 inches of radar-detected hail or larger. Prioritize photographic documentation with timestamps and geolocation for every inspection. Check vehicle panels, glass, and exterior mechanical equipment. When addressing immediate exposure, use industry-standard tarping and securement methods. Note any signs of prior deterioration that could convert an otherwise repairable hit into a full replacement.

Prepare written estimates itemizing roof components, window or skylight glazing, siding sections, and ancillary equipment repairs. Coordinate with property owners to preserve damaged materials for insurer review and consider moisture-entry checks for attic and ceiling systems after large hail strikes. Maintain crew safety protocols for ladder and roof work on fresh-damaged surfaces.