Whitehall, WI Hail Storm – June 2026

What Happened

A hail-producing storm tracked through Whitehall, Wisconsin on June 30, 2026, producing peak hail measured at 1.96 inches and triggering a sequence of NWS alerts from mid-morning into the early evening. The event produced a mix of NWS warning-only notices and radar-detected hail signatures from NEXRAD dual-polarization processing.

Twelve NWS alerts covered the system between 7:23 AM CDT and 6:29 PM CDT. Early morning activity produced several warning-only alerts between about 7:23 AM and 9:06 AM. The storm redeveloped late afternoon and early evening. Dual-polarization radar indicated hail-sized returns around 3:29 PM CDT and 4:35 PM CDT with radar-derived diameters near 1.33 and 1.36 inches. A later radar-derived signature at 6:14 PM CDT registered about 1.45 inches. Those radar detections coincided with multiple spotter-verified surface reports.

A 911 call center relayed a spotter-verified hail report at 7:32 AM CDT recording stones near 1.75 inches. In the late afternoon, crowdsourced mPING entries at 5:25–5:26 PM CDT logged half-dollar to ping-pong-ball sized hail, and multiple social media posts near Trenary at about 6:10–6:14 PM CDT showed ping-pong-ball sized stones. A social media entry at 6:33 PM CDT reported nickel-sized hail with no picture. The sequence shows early-morning surface impacts followed by renewed late-afternoon to early-evening activity along the same corridor.

Damage Assessment

Field reports and shared images document repeated surface impacts north and east of Whitehall, with concentrated spotter-verification near Trenary in the early evening. The 7:32 AM CDT relay from a 911 center noted large stones locally, and the late-afternoon mPING and social media posts placed 1.25–1.5 inch stones in multiple nearby locations at about 5:25–6:14 PM CDT.

Reports include two identical mPING ping-pong ball entries at 5:26 PM CDT and duplicate half-dollar entries at 5:25 PM CDT. Social media images time-estimated by radar show ping-pong-ball size hail roughly 1.5 miles south of Trenary at about 6:10 PM CDT. No official Local Storm Report in the provided dataset described structural collapse or widespread catastrophic damage. The pattern of multiple independent spotter-verified reports combined with radar-derived 1.33–1.45 inch signatures indicates repeated, localized impacts rather than a single isolated strike point.

For properties and vehicles in the Trenary corridor and the areas covered by the NWS warning area, expect concentrated impact evidence where observers photographed or reported stones. Inspectors should treat the locations and times tied to spotter reports as primary leads when documenting loss or verifying claims.

What Contractors Should Know

Prioritize inspections for properties near Trenary and along routes between Whitehall and the Trenary area where spotters and social media placed ping-pong sized hail at about 6:10–6:14 PM CDT. Also examine sites that experienced early-morning activity; a 911 call center relayed a 7:32 AM CDT report of larger stones. Start with external vehicle panels and exposed HVAC equipment, then move to roofing areas that face the storm approach angle indicated by the radar track.