Killdeer, ND Hail Storm – July 2026

Killdeer, ND experienced a severe hail event on July 5, 2026, producing a peak 3.7-inch stone during an evening to overnight multi-zone storm. The system generated nine NWS alerts and multiple radar-detected hail signatures across the warning area.

What Happened

The alert sequence began at 5:42 PM CDT and concluded at 2:36 AM CDT, totaling nine NWS alerts issued for parts of Killdeer and nearby territory. Five alerts were issued as NWS warning only at 5:42 PM CDT, 6:20 PM CDT, 6:32 PM CDT, 7:15 PM CDT, and 2:36 AM CDT. Dual-polarization radar detected discrete hail signatures at 6:28 PM CDT (2.13 inches), 7:03 PM CDT (1.75 inches), 8:06 PM CDT (1.05 inches), and 9:13 PM CDT (1.00 inch). The event was a concluded multi-zone aggregate storm by early morning.

Radar-detected hail echoes were concentrated along the storm track through and immediately surrounding the NWS warning area. NWS warnings and radar detections overlap in time and space, with some warnings issued without a corresponding radar hail signature and others supported by dual-polarization radar returns. The sequence produced repeated hail-producing cells moving across the same corridors in the late afternoon and early evening, then redeveloping overnight.

Damage Assessment

Radar-detected hail during the event ranged from roughly 1.00–2.13 inches across the recorded detections. Hail in this range commonly causes denting to vehicle bodywork, damage to asphalt shingles and roof granules, and cracking or breakage of skylights and single-pane windows when exposure is direct. Localized larger stones, including the peak stone recorded during the event, increase the likelihood of shingle loss, punctures to vinyl siding, and moderate structural damage to unsecured rooftop equipment.

Agricultural impacts are most likely where hail passed repeatedly over the same fields during the late afternoon and overnight redevelopments. Young row crops, tender plants, and exposed irrigation equipment are susceptible to leaf shredding, defoliation, and impact damage consistent with the radar hail swaths. Damage reports should be tied to the locations within the warning area and to the radar hail track to identify concentration points for claims and repairs.

What Contractors Should Know

Prioritize roof and vehicle inspections in Killdeer and the adjacent warning area. Start with photographic documentation of all damaged surfaces and elevation-referenced images to correlate with later strike-map output. Inspect asphalt shingles for bruising and granule loss, check metal panels and HVAC condensers for dents and punctures, and evaluate windows, gutters, and siding. Triage elevated safety hazards such as loose roofing materials and compromised glazing before conducting full repairs.

Plan for staged repairs. Temporary tarps and fasteners can limit interior water intrusion until full replacement is feasible. Provide clients with written scope-of-work estimates that reference observed hail sizes and the radar-detected hail swaths. Maintain photos with timestamps and location markers for each site assessed.