Golf ball-sized hail detected near Rochester, MN on August 18, 2026
Hail was detected at a radar-indicated point within the Rochester monitoring area. Actual impact can vary by neighborhood, so nearby homes should use this as a signal to check roofs, gutters, siding, and vehicles.
Damage assessment
The radar-confirmed strike landed approximately 17 miles east of downtown Rochester — the county logged one report for the day, an isolated hit rather than a widespread event. At 2.5 inches, architectural asphalt shingles take a real beating: expect cracked tabs, bruising, and granule loss sufficient to compromise waterproofing, which qualifies as functional damage under most insurance definitions. Roofs older than 10–12 years are most vulnerable; newer shingles may still show cosmetic bruising that adjusters count. This event ranks #10 of 155 recorded hail events ≥1 inch over the past decade in the Rochester area — notably, the county's largest recorded event reached 3 inches on July 14, 2023.
On a $287,500 home with a 2% deductible, your out-of-pocket threshold is $5,750. Typical repair cost for a 2,000 sq ft roof after a hail event of this magnitude runs $8,462, with a range of $6,923–$10,001 depending on roof pitch, access, and material condition. Get a professional inspection before making any insurance decisions.
At these numbers, the typical repair cost exceeds a standard 2% deductible. Contact your insurer — damage at this level is likely worth filing before you pay out of pocket.
This storm may have damaged your roof — get a free Rochester inspection
Rochester repair cost reference
Historical context
This event ranks #10 of 155 hail events ≥1 inch recorded in the Rochester area over the past 10 years, putting it solidly in the upper tier by magnitude. The largest hail on record for this area reached 3 inches on July 14, 2023. August sees roughly 18 hail events per decade in this county, making it an active but not exceptional month — peak season runs May through July.
Storm system
No other counties were tracked for hail activity on August 18, 2026. This was an isolated event, not part of a broader regional storm system.
Contractor guidance
Local contractor data shows current backlogs running 2–4 weeks following storm activity in this area. The intake assessment rates storm chaser risk as moderate, consistent with Rochester's pattern of drawing out-of-area contractors after notable hail events. Minnesota law requires roofing contractors doing residential work to register with the Department of Labor and Industry under Minn. Stat. § 326B.092 — registration requires proof of general liability and workers' comp. Before signing anything, verify registration status through the MN Department of Labor and Industry's online license lookup.
Permits & building code
At 2.5 inches, full replacement is plausible depending on shingle age and the inspection findings — repair is possible on newer roofs with localized damage. Olmsted County requires a permit for roofing work; the contractor pulls it, cost typically runs $150–$350, and an inspection is required upon completion. Class 4 impact-resistant shingles qualify for a 10–20% discount with most Minnesota insurers.
- 1Photograph your roof, gutters, downspouts, and any exterior surfaces showing dents or damage — do this before any contractor walks the roof.
- 2Schedule an inspection with a Minnesota-registered roofing contractor; verify their license status at the MN Department of Labor and Industry before booking.
- 3Contact your insurer to report potential damage and ask about the claim process and any deadlines specified in your policy declarations page.
- 4Do not sign any contract with a contractor offering to waive or cover your deductible — that practice is illegal under Minnesota law and voids the agreement.
- 5Keep copies of all inspection reports, estimates, and communications with your insurer and any contractors in a single file.
This storm may have damaged your roof — get a free Rochester inspection
Hail detection for this event is based on NOAA NEXRAD radar data (SWDI) and is radar-confirmed; a full NWS written summary is pending.