Brandon, IA Hail Storm – August 2026

Brandon, IA — Aug 11, 2026: Mid-morning thunderstorms moved through Brandon and produced hail up to 1.54 inches in diameter, with a string of NWS warnings and radar detections. The event is concluded.

What Happened

Storm activity began in the early morning and intensified in mid-morning on Aug 11. The NWS issued 24 alerts tied to this event across the Brandon metro. Most alerts carried NWS warning only language. Two alerts included dual-polarization radar detection at 7:07 AM CDT and 8:38 AM CDT, which identified stronger hail signatures. Alert timestamps ranged from 6:53 AM CDT through 9:48 AM CDT. Radar-detected hail signatures and repeated NWS warnings tracked the cell cluster as it crossed the Brandon area. The sequence indicates multiple re-issuances of warning area coverage rather than a single continuous polygon.

Damage Assessment

Alerts reported hail sizes from 0.75 inch in multiple NWS warning only messages up to a radar-detected peak of 1.54 inches. In Brandon, hail in this size range commonly damages vehicle body panels, unprotected glazing, and older asphalt roofing. Metal siding and exposed HVAC fins are at risk of impact dents. Shingles with prior wear can show granule loss and bruising that may lead to leaks under subsequent rain. Street-level landscaping and greenhouse glazing are vulnerable to breakage at the upper end of the reported sizes. No spotter-verified ground reports are included in the alert set; radar evidence indicates peak hail signatures centered on mid-morning storm passes through the metro.

What Contractors Should Know

Plan inspections beginning with roofing, followed by vehicle lots and exterior mechanical equipment. For roofs, document hail locations with timestamped photos and GPS coordinates. Inspect for granule loss, split or cracked shingles, deformed metal flashing, and compromised sealants at roof penetrations. Note that hail bruising can be concealed beneath shingle granules; lift samples where safe and practical to check for fiber mat damage.

For claims triage, separate clear impact damage from pre-existing wear. Record plate or serial numbers on outdoor units and photograph fin damage from multiple angles. Use ladder and harness safety protocols when accessing roofs; avoid standing on weakened shingles. Provide clients with a written scope that lists observed impact types and a prioritized repair sequence to reduce risk of water intrusion. For precise hail track mapping and to target inspections within the Brandon metro, access the paid Strike Map to view the detailed damage zone and radar-derived hail track.