Rolla, ND Hail Storm – September 2026

A hail-producing storm tracked through Rolla, ND on September 5, 2026, producing 1.44-inch stones and localized hail impacts in the early evening. The event generated radar hail detections and a spotter-verified ground report during the NWS warning period.

What Happened

Dual-polarization radar detected significant hail returns across the Rolla area in the early evening of September 5. At 6:48 PM CDT radar indicated a 1.18-inch hail signature within the storm. Two NWS alerts covered the cell. A NEXRAD-based radar detection of sizable hail issued at 6:48 PM CDT. A follow-up NWS warning at 6:50 PM CDT referenced 1.00-inch hail within the warning area.

A public observer reported conditions at 7:10 PM CDT. The spotter described many small hailstones with a few quarter-sized stones mixed in and very little wind. That on-the-ground observation was spotter-verified and aligns with the NWS warning window.

The storm was fast-moving and brief across the Rolla metro area. Radar returns and the single spotter submission indicate the most intense hail concentrated within a narrow corridor just after early evening. No additional public storm reports were filed for Rolla during the same hour.

Damage Assessment

Field reports and radar returns show limited surface impacts across Rolla. The spotter-verified account specifically noted many small stones and only a few quarter-sized stones, and it reported very little wind, which reduces the likelihood of wind-related structural damage in the immediate report area. Local observations did not include reports of widespread roof failures, snapped trees, or large debris fields within the city limits.

Where impacts are most likely, based on the spotter location and radar swath, are exposed vehicles, unshielded soft roofing materials, and outdoor equipment in the immediate storm corridor. Homeowners alerted by the spotter should expect localized cosmetic damage such as paint chips, small dents, or bruising to vinyl siding where quarter-sized stones struck exposed surfaces. Businesses with rooftop units that lack protective screens or shrouds should inspect for minor denting and debris accumulation.

Public records for the event show no clustered reports of major structural loss tied to this storm in Rolla. Insurance adjusters and municipal crews responding locally characterized the event as a short-duration hail episode with isolated, minor surface impacts concentrated near where the spotter observed mixed small and quarter-sized hailstones.

What Contractors Should Know

Prioritize targeted inspections within Rolla neighborhoods along the radar-detected corridor and near the spotter’s reported location. Start with photographic documentation of suspect damage before making repairs. Note the event time and the spotter-verified hail description when logging each assessment. Focus initial inspections on vehicles, exposed soft roofing (shingles, rolled roofing), gutters, skylights, and HVAC housings.