Severe Thunderstorm Warning Issued for South Dakota Counties
If you are in immediate danger, call emergency services now.
For real-time, official alerts and instructions for your exact location, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia) as applicable. This article is a data summary, not a substitute for the issuing agency's live warning.
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Sioux Falls has issued a Severe Thunderstorm Warning for Aurora, Brule, Davison and Jerauld counties in South Dakota until 2:00 AM CDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- South Dakota
- Issued
- August 18, 2026
- Issuing authority
- NWS Sioux Falls 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
A Severe Thunderstorm Warning has been issued by the National Weather Service in Sioux Falls SD. The alert is effective from August 18, 2026 at 1:29 AM CDT until August 18, 2026 at 2:00 AM CDT.
Affected Areas
The warning covers Northwestern Davison County, Aurora County, Southwestern Jerauld County, and Eastern Brule County in South Dakota. Severe thunderstorms were located along a line extending from 6 miles north of Storla to near White Lake to near Kimball.
What You Should Do
Move to an interior room on the lowest floor of a building. To report severe weather, contact your nearest law enforcement agency.
Expected Conditions
At 1:29 AM CDT, severe thunderstorms were moving southeast at 40 mph. Hazards include 60 mph wind gusts and hail up to 0.75 inches. Expect damage to roofs, siding, and trees.
Timeline
The warning is in effect until 2:00 AM CDT on August 18, 2026. Severe thunderstorms will be near Plankinton, White Lake, Storla, and Grass Ranch Colony around 1:35 AM CDT and Mount Vernon around 1:45 AM CDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Frequently Asked Questions
Common questions about this NWS weather alert.