Union County, SD — Severe Weather & Radar
No active severe-weather warnings for Union County, SD right now. Live radar is below — set up alerts to get warned the moment one is issued.
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Severe-weather outlook
No severe-weather risk is outlooked for Union County, SD today.
3-day forecast
Forecast via Open-Meteo.
When is severe weather most likely near Union?
Union County lies in the northern Great Plains, where the severe-weather season peaks from May through July.
Large hail, damaging winds, and tornadoes are the main threats, most often from afternoon and evening thunderstorms.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Union County, SD
Union County, SD has an estimated 20,000 residents, plus 1 hospitals, 1 nursing homes, 14 schools, 1 dialysis centers that could be in a storm's path. Atmostorm shows which of them fall inside an active warning polygon.
Emergency-management view: who & what is in the warned path →
Nearby areas
Live radar and active alerts for places near Union:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.