Severe Thunderstorm Warning Issued for Dewey and Walworth Counties, SD
This alert is no longer in effect.
NOAA issued it on June 20, 2026, 2 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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 Aberdeen has issued a Severe Thunderstorm Warning for northeastern Dewey County and southwestern Walworth County in north central South Dakota until 6:15 PM CDT.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- North Central South Dakota
- Issued
- June 20, 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: historical. It was issued 2 months ago; use the issuing agency's live warning service for current conditions in North Central South Dakota.
Alert Details
A Severe Thunderstorm Warning has been issued by the National Weather Service in Aberdeen SD. The alert is effective from June 2 at 5:35 PM CDT until June 2 at 6:15 PM CDT.
Affected Areas
The warning covers northeastern Dewey County and southwestern Walworth County in north central South Dakota. The storm was located near Swan Creek Rec Area, or 21 miles south of Mobridge, moving north at 20 mph.
What You Should Do
For protection, move to an interior room on the lowest floor of a building. If on or near the Missouri River south of Mobridge, get away from the water and move indoors or inside a vehicle. Move to safe shelter now if you can hear thunder.
Expected Conditions
At 5:32 PM CDT, a severe thunderstorm was located near Swan Creek Rec Area. Hazards include quarter size hail and wind gusts up to 50 mph. Damage to vehicles is expected.
Timeline
The warning is in effect from 5:35 PM CDT to 6:15 PM CDT on June 2, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (965 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 20, 2026.
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