Arivaca, AZ Hail Storm – July 2026

Arivaca, AZ is being impacted by a multi-zone hail event that began on July 27, 2026, producing a peak hail diameter of 1.59 inches and continuing to track through the region.

What Happened

The storm initiated in the early evening of July 27 and persisted into the overnight hours, generating multiple NWS alerts and mixed radar verification. At 6:39 PM MST on July 27 a dual-polarization radar detection indicated 1.01-inch hail within the warning area. At 11:33 PM MST on July 27 the NWS issued a warning-only alert that did not include radar hail detection for the polygoned area. At 2:18 AM MST on July 28 a later NWS warning-only alert reported 1.00-inch hail in portions of the warning polygon. Aggregated reports show a maximum hail diameter of 1.59 inches in the broader event footprint. The storm remains active and is continuing to produce intermittent hail reports and warning polygons across the Arivaca metro.

Damage Assessment

Radar-detected hail around the 1.0-inch range within the Arivaca warning areas can produce localized denting to vehicle body panels and loss of shingle granules on asphalt roofs along the storm track. Where the event produced larger stones approaching the observed peak, expect deeper impact marks on metal roof panels and potential pitting on exposed rooftop equipment. Agricultural structures and unprotected solar arrays in and around Arivaca are at elevated risk for cracked glass or displaced panels where radar-detected segments intersected developed parcels.

Damage is likely to be patchy because portions of the warning polygons were NWS warning-only without radar confirmation. Inspect prioritized surfaces that are directly under radar-detected corridors first, then expand to adjacent properties within the warning area. Document visible dents, punctures, granule loss, and broken glazing with scale references and location notes tied to the time-windowed alerts.

What Contractors Should Know

Prioritize safety and documentation. Establish a secure access protocol for Arivaca properties inside the warning polygons and ensure crews avoid ongoing storm cells. Use calibrated hail gauges or rulers and photograph each damaged item with a dated reference and location note. Start with vehicle fleets, rooftop solar arrays, HVAC condenser fins, and exposed glazing. For shingle assessments, identify areas of concentrated granule loss and broken tabs and log roof pitch and exposure when recording damage locations.

Plan temporary repairs for wet-weather exposure and stagger full inspections to match clearing windows in the storm track. Coordinate with property owners and insurers on immediate tarping for open roofing failures and temporary covers for broken solar modules. Provide scope estimates that separate hail-specific impact items from pre-existing wear. Maintain a time-stamped photo log tied to the alert timeline to support claims and repair billing.