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Verified NWS Local Storm Reports

South Dakota Hail Storm — Friday, August 21, 2026

Every verified storm report NWS spotters filed in South Dakota on Friday, August 21, 2026 — hail up to 3" (baseball size). The same ground-truth data insurance adjusters trust.

3"
Largest hail (baseball)
11
Hail reports
11
Towns hit
7
Wind & tornado reports
69 mph wind — 10 ESE Oelrichs, Fall River Co. (Aug 21, 2026)1" hail — 13 W Oglala, Oglala Lakota Co. (Aug 21, 2026)59 mph wind — 10 ESE Oelrichs, Fall River Co. (Aug 21, 2026)3" hail — 6 ENE Oelrichs, Fall River Co. (Aug 21, 2026)53 mph wind — 7 SSE Hot Springs, Fall River Co. (Aug 21, 2026)52 mph wind — 5 ESE Hot Springs, Fall River Co. (Aug 21, 2026)58 mph wind — 2 SSW Oral, Fall River Co. (Aug 21, 2026)58 mph wind — 1 SSW Chancellor, Turner Co. (Aug 21, 2026)0.88" hail — Chancellor, Turner Co. (Aug 21, 2026)1" hail — 5 NE Lesterville, Yankton Co. (Aug 21, 2026)1" hail — 4 S Sioux Falls, Lincoln Co. (Aug 21, 2026)76 mph wind — 7 WSW Wall Lake, Turner Co. (Aug 21, 2026)1" hail — 2 W Baltic, Minnehaha Co. (Aug 21, 2026)1" hail — 5 ENE Crooks, Minnehaha Co. (Aug 21, 2026)1.25" hail — 4 NE Crooks, Minnehaha Co. (Aug 21, 2026)1.25" hail — 3 NE Crooks, Minnehaha Co. (Aug 21, 2026)1.5" hail — 5 NW Crooks, Minnehaha Co. (Aug 21, 2026)1.25" hail — 2 W Hartford, Minnehaha Co. (Aug 21, 2026)10 ESE Oelrichs13 W Oglala6 ENE Oelrichs7 SSE Hot Springs5 ESE Hot Springs2 SSW Oral

Was a specific roof under this storm?

Type any South Dakota address and get that exact roof's verified hail history — including this storm — plus measurements and a replacement cost range. Free.

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Hail by town — Friday, August 21, 2026

6 ENE OelrichsFall River Co.1 reportmax 3"baseball
5 NW CrooksMinnehaha Co.1 reportmax 1.5"ping pong ball
4 NE CrooksMinnehaha Co.1 reportmax 1.25"quarter
3 NE CrooksMinnehaha Co.1 reportmax 1.25"quarter
2 W HartfordMinnehaha Co.1 reportmax 1.25"quarter
13 W OglalaOglala Lakota Co.1 reportmax 1"quarter
5 NE LestervilleYankton Co.1 reportmax 1"quarter
4 S Sioux FallsLincoln Co.1 reportmax 1"quarter
2 W BalticMinnehaha Co.1 reportmax 1"quarter
5 ENE CrooksMinnehaha Co.1 reportmax 1"quarter
ChancellorTurner Co.1 reportmax 0.88"penny

All verified reports

Time (UTC)LocationEvent
10:35 PM10 ESE OelrichsFall River Co.69 mph wind
10:30 PM13 W OglalaOglala Lakota Co.1" hail
10:25 PM10 ESE OelrichsFall River Co.59 mph wind
10:15 PM6 ENE OelrichsFall River Co.3" hail
9:50 PM7 SSE Hot SpringsFall River Co.53 mph wind
9:50 PM5 ESE Hot SpringsFall River Co.52 mph wind
9:45 PM2 SSW OralFall River Co.58 mph wind
1:19 AM1 SSW ChancellorTurner Co.58 mph wind
1:13 AMChancellorTurner Co.0.88" hail
12:49 AM5 NE LestervilleYankton Co.1" hail
12:28 AM4 S Sioux FallsLincoln Co.1" hail
12:25 AM7 WSW Wall LakeTurner Co.76 mph wind
12:14 AM2 W BalticMinnehaha Co.1" hail
12:12 AM5 ENE CrooksMinnehaha Co.1" hail
12:10 AM4 NE CrooksMinnehaha Co.1.25" hail
12:08 AM3 NE CrooksMinnehaha Co.1.25" hail
12:02 AM5 NW CrooksMinnehaha Co.1.5" hail
12:00 AM2 W HartfordMinnehaha Co.1.25" hail

About this storm

How big was the hail in South Dakota on Friday, August 21, 2026?

The largest verified hail report that day measured 3" — baseball sized. NWS spotters filed 11 hail reports across 11 towns.

Is that big enough to damage a roof?

Hail around 1" (quarter size) and up can bruise or crack asphalt shingles — that's the threshold insurance adjusters take seriously. Damage is often invisible from the ground, which is why an inspection matters even when the roof "looks fine."

How long do homeowners have to file a claim for this storm?

Most homeowner policies allow one to two years from the storm date — some as little as six months. This storm was 63 days ago, so the filing window is open for most policies.

How do I check if a specific address was hit?

Run a free roof report on Rooftops AI: type the address and you get the roof's measurements plus its verified hail history — every NWS-logged report near that exact property, with dates, sizes, and distances.

← All South Dakota storm reports (last 12 months)

Data: NWS Local Storm Reports via Iowa Environmental Mesonet. Local Storm Reports are preliminary, spotter-submitted observations and may be revised by the National Weather Service. Rooftops AI is not affiliated with or endorsed by NOAA or the NWS. Insurance filing windows vary by policy and state — homeowners should confirm with their carrier.