Sioux Falls, SD – Strong to severe thunderstorms could light up the skies Wednesday night, bringing hail, damaging winds, and heavy downpours to much of eastern South Dakota. The most intense storms may produce hail up to the size of half dollars and wind gusts as high as 70 mph, creating hazards for travel and outdoor activities.
According to the National Weather Service in Sioux Falls, storms are expected to move in after sunset Wednesday, with the greatest risk extending through the overnight hours. Communities across Minnehaha, Lincoln, and nearby counties should be prepared for sudden weather changes. Spotter activation may be needed as conditions develop.
Thursday and Friday will bring a shift from storms to heat, with afternoon heat index values near 100 degrees. Another round of thunderstorms is possible Friday night into the weekend, though forecasters currently have low confidence in the exact timing and severity of that system.
Residents are urged to secure outdoor items, have multiple ways to receive alerts, and avoid travel during peak storm periods. Additional updates are expected as the threat nears.
Five Day Forecast for Sioux Falls, SD:
- Tuesday: Sunny. High 81°F, low 58°F.
- Wednesday: Sunny, storms likely at night. High 83°F, low 67°F.
- Thursday: Partly cloudy, slight storm chance. High 86°F, low 71°F.
- Friday: Mostly sunny. High 90°F, low 71°F.
- Saturday: Mostly sunny. High 89°F, low 68°F.
