Ping pong-sized hail detected near Great Falls, MT on August 17, 2026

Damage assessment

The radar-confirmed strike centered approximately 14 miles north of downtown Great Falls, with one hail report logged in Cascade County that day. At 1.5 inches, architectural asphalt shingles are at the threshold where functional damage — granule loss, cracked tabs, compromised mat — becomes likely rather than merely cosmetic. Shingles already 15 or more years old are more vulnerable; newer installations may show only surface scuffing. For context, the largest recorded event in Cascade County reached 3 inches on July 7, 2022, well above the size that causes functional loss across all shingle types.

Great Falls repair cost reference

Historical context

This event ranks 27th of 72 hail events of 1 inch or greater recorded in Cascade County over the past 10 years, placing it in the lower half of the county's documented record. The county's largest event — 3-inch hail on July 7, 2022 — remains the benchmark for severe structural damage here. August historically produces around nine qualifying events over a 10-year span in this county, so mid-August activity is within the normal range.

Storm system

No other tracked counties recorded hail on August 17, 2026. This was an isolated event confined to the Cascade County area.

Contractor guidance

Local contractor data shows current backlogs of 1–2 weeks in the Great Falls market, which is relatively manageable. Storm chaser risk is assessed as low for this area, though the intake assessment notes that most post-storm capacity in Great Falls comes from contractors based in Montana's larger metros. Montana does not require a state-level roofing license, so verify that any contractor holds a general contractor license if required by the local jurisdiction, proof of liability insurance, and workers' compensation coverage — ask for all three before signing anything. A current Montana business license and verifiable local references are also worth confirming.

Permits & building code

At 1.5 inches, repair rather than full replacement is the more common outcome for roofs in good condition, though aged or previously damaged shingles may cross into replacement territory after inspection. Permits in Great Falls are pulled by the contractor, with typical costs running $100–$250 and a required inspection at completion. Class 4 impact-resistant shingles qualify for a 10–20% discount with most Montana insurers.