Black Canyon City, AZ Hail Storm – September 2026

Black Canyon City, AZ experienced a multi-zone hail-producing thunderstorm on September 23, 2026, with a peak radar-confirmed hail size of 1.41 inches in the late afternoon.

What Happened

Late on September 23 the storm produced two National Weather Service alerts covering Black Canyon City. At 3:54 PM MST (22:54 UTC) dual-polarization NEXRAD indicated hail to 1.17 inches. Three minutes later, at 3:57 PM MST (22:57 UTC), radar detected hail to 1.00 inches. The alerts were issued in quick succession across adjacent zones, producing a multi-zone aggregate report for the metro area. Dual-polarization radar identified the hail signatures used to generate the alerts. The event is concluded.

Damage Assessment

Radar detections for the event ranged from 1.00 to 1.17 inches in the alerted measurements. Hail in that range commonly produces dents and paint damage to vehicle body panels. Asphalt shingle roofs can sustain bruising, torn granules, and isolated shingle fractures where impacts concentrate. Exterior elements such as vinyl siding, skylights, and rooftop-mounted equipment can show localized damage after impacts of this size. Vegetation and exposed soft surfaces experienced defoliation and surface scarring consistent with late-afternoon hail impacts in an arid metro environment.

Roofing systems already near the end of expected life are more likely to show widespread visible damage. Vehicles parked without cover are at higher risk for panel dents and broken mirrors. Solar panels and glass surfaces should be inspected for microfractures and impact pits even when larger breaks are not immediately visible.

What Contractors Should Know

Prioritize rapid exterior assessments in the confirmed alert corridor. Start with aerial or ladder inspections to identify concentrated shingle loss and broken skylights. Photograph all findings with geotags and timestamps. Log vehicle claims separately by make, model, and location. Document rooftop mechanicals and solar arrays with both wide and close views to show context and point-of-impact detail.

Implement temporary protections where hazards exist. Secure tarps on roof sections with visible granule loss only after photographing pre-repair conditions. Use cordoned-off ground zones beneath repair work to protect crews from falling debris. Coordinate with property owners and adjust scopes for components that commonly hide secondary water intrusion, such as roof vents and flashings. Maintain clear field notes for insurance adjusters and for any required municipal permit submissions.

See the paid Strike Map for the radar-confirmed hail swath and the associated damage zone.