Severe Thunderstorm Warning — Dewey, SD; Stanley, SD; Sully, SD was recorded by Global Incident Tracker on Sunday, 27 September 2026 at 14:13 UTC. The event is classified as a storm incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).

Severe Thunderstorm Warning issued September 27 at 9:13AM CDT until September 27 at 10:00AM CDT by NWS Aberdeen SD SVRABR The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... North Central Stanley County in central South Dakota... Northwestern Sully County in central South Dakota... Southeastern Dewey County in north central South Dakota... * Until 1000 AM CDT /900 AM MDT/. * At 913 AM CDT /813 AM MDT/, a severe thunderstorm was located near Mission Ridge, or 30 miles northwest of Fort Pierre, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will be near... Mission Ridge around 915 AM CDT. Little Bend Rec Area around 925 AM CDT. Bush's Landing around 935 AM CDT. Sutton Bay R

Where this happened

The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.

Approximate coordinates of the reported event are 44.743°, -100.607°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.

Understanding storm events

Severe thunderstorms, windstorms, hail and winter storms. Severe storms combine wind, lightning, hail and sudden downpours. Secondary effects — falling trees, power line damage and flash flooding on roads — cause the majority of injuries.

How severity is rated

Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.

Safety guidance for storm situations

  • Move indoors and away from windows; avoid sheltering under trees.
  • Unplug sensitive electronics and avoid using wired equipment during lightning.
  • Assume every downed power line is live and keep well clear.
  • Do not drive through flooded underpasses.
  • Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.

Data and verification

This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.

Keep watching the situation on our live world incident map, browse every storms we track on the Storm tracker, or see today's global picture on the incidents today page.

Timeline and sources

Official warning

Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.

How statuses are decided · the number of reports is never treated as confirmation.

  1. · received · event time 27 Sep 2026, 14:13 UTC
    First report Official warning

    First recorded from U.S. National Weather Service.

    U.S. National Weather Service ↗

  2. · received · event time 27 Sep 2026, 14:39 UTC
    Also reported Official warning

    Also reported by U.S. National Weather Service: "Severe Thunderstorm Warning — Dewey, SD; Stanley, SD; Sully, SD"

    U.S. National Weather Service ↗

Times are when this site received each report, in UTC; the event time is shown where the source gave one. 2 reports are attached to this incident. Copies of one syndicated story count as one report.

Conditions at the time

0mm
Rainfall that day
25°C
Maximum temperature
17°C
Minimum temperature
24km/h
Peak wind speed

No rainfall was recorded that day, and the temperature peaked at 25°C. Conditions are shown for context only — they do not establish a cause.

Weather reanalysis for this location and date via Open-Meteo.