Why Minnesota sees so much hail
Minnesota sits inside an upper-midwest convective corridor where warm, moist air from the south meets cooler air from Canada. The combination produces severe thunderstorms with large hail and damaging straight-line winds, especially from May through August.
What "catastrophe years" actually mean
The insurance industry classifies storms above certain insured-loss thresholds as catastrophes (CAT events). For Minnesota, recent notable years include:
- 2017: Twin Cities metro hailstorms — billions in industry losses.
- 2019: Multiple severe hail events across central MN.
- 2022: Widespread metro and southern MN damage.
- 2023–2024: Continued elevated severity statewide.
What this means for premiums and deductibles
Carriers price using long-run loss expectations, not just last year's losses. A run of high-severity years moves the long-run expectation up, which is one of the largest forces behind recent Minnesota rate filings — and behind the broad shift toward percentage wind/hail deductibles.
Storm season checklist
- Document your roof and exterior with photos in May.
- Trim trees away from the home.
- Confirm your wind/hail deductible in dollars before peak season.
- Save your declarations page somewhere accessible from your phone.