Eureka, SD Hail Storm – July 2026

A severe hail-producing storm crossed Eureka, South Dakota on July 4, 2026, producing a peak 2.28-inch stone and a sequence of radar-detected hail signatures. The storm moved through the metro in the late afternoon and into the early evening, prompting a series of NWS alerts.

What Happened

NWS issued nine alerts for the Eureka area between 3:13 PM CDT and 8:27 PM CDT as the cell progressed northeast. Dual-polarization radar tracked multiple hail cores from mid-afternoon through early evening, with radar-derived hail detections reported in the NWS alert area at roughly 3:15 PM, 3:45 PM, 4:15 PM, 5:00 PM, 6:18 PM, 6:54 PM, 7:48 PM and 8:27 PM. One spotter observation at 6:37 PM CDT placed measurable hail on the ground inside the metro.

Storm structure evolved through several compact updraft pulses. Radar signatures showed repeated hail echoes passing over the same parts of the NWS alert area during the late afternoon and early evening. A local storm report from a trained observer at 6:37 PM CDT described mainly dime- and nickel-size hail with some larger hailstones mixed in, and recorded a 1.25-inch measurement. That spotter-verified observation aligns with the radar-detected cores that moved across town within a two- to three-hour window.

Damage Assessment

Field reports from July 4 list no widespread structural loss in the dataset provided. The spotter-verified LSR at 6:37 PM CDT documents most hail as dime- to nickel-size with intermittent larger pieces; the same record includes a 1.25-inch measured stone. Radar detections show variable hail intensity along the track inside the NWS alert area rather than uniform coverage across the entire metro.

Given the sequence of radar echoes and the spotter measurement, impacts recorded in the available reports were localized. No additional local storm reports in the supplied record described frank roof failures, collapsed structures, or mass tree loss tied to this event. Vehicle denting and shingle bruising are plausible in areas directly beneath the stronger radar cores and the spotter location, but specific claims of those damages do not appear in the collected field reports.

What Contractors Should Know

Timing and track. The strongest radar returns passed through the Eureka NWS alert area in a cluster from late afternoon into early evening. Plan initial drive-by inspections for properties that lie along the mapped hail track and prioritize the parcels nearest the spotter-verified 6:37 PM CDT observation point and adjacent radar cores. Those locations show the highest likelihood of measurable hail impact in the supplied records.

Inspection focus. Carry high-resolution roof cameras and magnetizable shingle gauges. Expect localized granular loss, impact bruises on asphalt roofing, and possible denting on aluminum and soft-metal trim where radar cores crossed overhead. Check vehicles for rounded dents and paint cracking near the spotter location and where successive radar detections traversed the same addresses. Document findings with geotagged photos and date-stamped notes tied to each parcel inside the NWS alert area.