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The NOAA Storm Prediction Center (SPC) received 3 reports of hail 1 inch or larger in Oglala Lakota County, SD on the August 11, 2026 storm day, the largest 4.00 in — softball size. The reports are grouped by county because they were not within 10 miles of a city of 10,000 or more. It is the most recent of 5 days with significant hail here in the last 12 months. Below are the reports, what hail this size does to a roof, a checklist and the insurance steps.
| Time | Size | Location | County | Remarks |
|---|---|---|---|---|
| 23:48 UTC | 4.00 in | 6 NW Oglala | Oglala Lakota County | Measured with calipers. Time estimated based on radar. (NWS UNR) |
| 00:05 UTC | 3.00 in | 5 SE Oglala | Oglala Lakota County | Hail stone remained lodged in roof after penetrating both the shingles and underlying plywood. Photos received via social media. Time of report adjusted based on radar. (NWS UNR) |
| 00:20 UTC | 3.00 in | 1 SSE Pine Ridge | Oglala Lakota County | Severe damage to homes and vehicles reported. Holes in siding and roofs. Windows shattered. Report and photos via social media. Time estimated based on radar. (NWS UNR) |
Source: NOAA/NWS Storm Prediction Center, storm reports for August 11, 2026. Times are UTC: US Eastern time is 4 hours behind in summer and 5 in winter, Central 5 and 6. Reports are preliminary and may be revised; a report is one observation at one spot, not a map of where hail fell.
4.00 in is softball size, at or above the 1-inch size the National Weather Service calls severe. It is larger than the 2-inch steel ball used for the toughest lab rating (UL 2218 Class 4), so even impact-rated shingles can be damaged by stones this size. Have the roof inspected.
Shingle age matters as much as stone size: an asphalt roof loses flexibility as it ages, so the same storm can leave a new roof untouched and crack one that is 15 years old. Wind-driven hail hits the side of the roof facing the storm hardest. Use the hail damage roof calculator to compare the size you saw with your roof's age and impact rating.
Hail size guide: National Weather Service hail size descriptors.
All significant hail in South Dakota in the last 12 months · Recent hail storms in every state
This page is rebuilt every morning from the SPC's reports. It is not a damage assessment: only an inspection of your roof can tell you whether it was damaged.
Yes. The NOAA Storm Prediction Center logged 3 hail reports of 1 inch or larger in Oglala Lakota County, SD on the August 11, 2026 storm day, the largest 4.00 in (softball size). Reports are preliminary and describe single spots; hail size can change from one street to the next.
Damage becomes likely from about 1 inch (quarter size), which is why the National Weather Service calls that severe. Older and brittle shingles can be marked by smaller stones; 1.75-inch (golf ball) hail and larger often damages standard shingles, and stones over 2 inches exceed the largest UL 2218 test ball used for Class 4 ratings.
It depends on the policy and the state. Many homeowners policies allow a year from the date of loss, some less, and a few states set their own limits for wind and hail claims. Read the 'duties after loss' section of your policy and report the damage promptly.
If hail of 1 inch or more fell at your address, yes. Bruised shingles can look fine from the ground and leak months later, after a claim window may have closed. See what an inspection costs with the roof inspection cost calculator.