Waubay, SD Hail Storm – August 2025

Waubay, SD saw a concluded hail storm on 2025-08-17 with a peak confirmed hail size of 1 inch. The event produced two NWS hail alerts across the morning period.

What Happened

The storm developed in the Waubay area in the mid-morning and produced two hail alerts tied to dual-polarization radar confidence. The first alert came at 8:43 AM CDT with a 1-inch hail indication. A second alert followed at 8:56 AM CDT with the same 1-inch hail estimate.

Both alerts pointed to a consistent hail signal over a short window. The storm was no longer active after the morning sequence ended. No later hail reports were included in the event set.

Damage Assessment

One-inch hail is enough to leave visible impact on roofs, siding, gutters, skylights, vents, and soft metals. It can bruise exterior paint, loosen shingles, dent thin gauge metal, and crack older plastic components. Vehicles parked outside can also show scattered impact marks on horizontal surfaces and exposed trim.

The risk profile depends on roof age, slope, material type, and exposure during the hail core. Asphalt shingles with prior wear can show granule loss and corner damage. Metal roofs, awnings, and vinyl accessories can show dents or fractures even when the hail field is brief. Window screens and lightweight outdoor fixtures often take the first visible hits.

In a multi-zone storm report like this one, the mapped alerts can help narrow inspection priorities. The morning timing suggests the most likely field checks are on homes, farm structures, vehicles, and light commercial buildings that were in the warning area when the hail passed.

What Contractors Should Know

Start with roof planes, ridge caps, flashing, gutters, and soft metals. Document impact patterns on the windward side and compare them with field exposure during the 8:43 AM CDT to 8:56 AM CDT alert window. If the property has a mix of material types, inspect each surface separately. One-inch hail often leaves uneven marks. Some assets will show clear damage while adjacent surfaces remain only lightly marked.

Keep estimates tied to observed conditions, not the alert language alone. Verify each property against actual field evidence, roof age, and collateral checks from siding, windows, screens, downspouts, and vehicles. For exterior claims work, photograph hail hits on metal finishes and brittle plastic components before any cleanup. If tree cover or structures reduced exposure, note that in the file.

For route planning, use the alert sequence to sort the most likely inspection clusters first. Early checks should focus on addresses within the morning warning area and any sites with direct roofline exposure. When crews need more exact path detail, the Strike Map provides the precise hail track data.