Rio Rico, AZ Hail Storm – October 2026

A late-afternoon hail storm moved through Rio Rico, AZ on October 22, 2026, producing up to 3-inch stones and multiple spotter-verified impacts. The storm produced alternating periods of radar-detected hail and NWS warning-only advisories in a roughly one-hour window.

What Happened

A storm cell intensified over southern Santa Cruz County in the late afternoon. The first NWS warning-only alert issued at 3:31 PM MST cited 1.00-inch hail potential. Four minutes later at 3:35 PM a CoCoRAHS spotter reported 1.5–2.0 inch stones and noted a few hail stones measuring 3.00 inches. Spotters in Rio Rico reported additional large stones within the next ten minutes, including a golf ball-sized report at 3:45 PM and a 1.5-inch observation at 3:37 PM. Dual-polarization radar later detected hail signatures at 4:04 PM and again at 4:40 PM, with radar-derived detections increasing in size on the 4:40 PM scan.

NWS issued a second warning-only alert at 4:30 PM while the radar continued to show hail echoes along the storm’s axis. Social media video from 4:45 PM showed fast-falling quarter-sized hail in town. A spotter in Benson reported 1.00-inch hail at 4:56 PM as the system moved eastward. The sequence of NWS warning-only messages and radar-detected hail signatures indicates a storm that cycled through pulses of stronger and weaker hail production as it tracked roughly west-to-east across Rio Rico and into adjacent communities.

Damage Assessment

Field reports and on-scene media capture indicate concentrated surface impacts in residential neighborhoods of Rio Rico and a smaller area near Benson. Multiple spotters reported stones large enough to fracture vegetation and leave distinct impacts on paved surfaces in the immediate area of the CoCoRAHS observation. Video recorded at 4:45 PM shows hail accumulation on yards and street-level scattering consistent with repeated, short bursts of moderate-to-large hail.

No centralized municipal damage report is available in the submitted field reports. The CoCoRAHS observer’s note of very large individual stones and the cluster of golf-ball and ping-pong-ball sized observations across Rio Rico align with the radar-detected hail swath that crossed local streets and properties. Benson’s 4:56 PM report documents smaller, quarter-sized stones on the storm’s trailing edge.

Field evidence in this event is specific to discrete neighborhoods in Rio Rico and one observer in Benson. If property inspections find denting, broken landscape, or vehicle panel damage, document location and time-stamped photos. Note the spotter times above when matching impacts to the storm timeline.

What Contractors Should Know

Work prioritization. Focus first on properties directly inside the neighborhood corridors where spotters were active between 3:30 PM and 4:00 PM MST. Those addresses are most likely to show signs of large-stone impacts. Use the 3:35 PM CoCoRAHS observation and the 3:45 PM golf-ball report as initial time anchors when coordinating field canvasses.