Severe Thunderstorm Warning for Southeastern Lyman County, SD
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NWS Aberdeen has issued a Severe Thunderstorm Warning for southeastern Lyman County until 3:00 AM CDT, with 60 mph winds and quarter-sized hail.
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- Record type
- Severe Thunderstorm Warning
- Affected area
- Central South Dakota
- Issued
- August 18, 2026
- Issuing authority
- NWS Aberdeen SD
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Severe Thunderstorm Warning issued by NWS Aberdeen SD. Effective from August 18, 2026 at 2:20 AM CDT until August 18, 2026 at 3:00 AM CDT. Alert type code: SVR.
Affected Areas
Southeastern Lyman County in central South Dakota, including areas near Dude Ranch and Oacoma.
What You Should Do
Seek shelter inside a well-built structure and stay away from windows.
Expected Conditions
At 2:20 AM CDT, a severe thunderstorm was located 6 miles west of Dude Ranch (8 miles west of Oacoma), moving southeast at 50 mph. Hazards include 60 mph wind gusts and quarter size hail (1.00 inch). Radar indicated.
Timeline
The warning is in effect until 3:00 AM CDT on August 18, 2026.
Original source: NOAA Official Notice ↗
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