Sioux Falls, SD – Residents in southeastern South Dakota, northwest Iowa, and northeast Nebraska should prepare for severe weather Monday afternoon and evening. A dynamic storm system is expected to bring large hail and powerful wind gusts to the region, creating potentially hazardous conditions.
According to the National Weather Service in Sioux Falls, the area is under a Slight Risk (Level 2 of 5) for severe thunderstorms. The primary threats include hail up to the size of golf balls and damaging wind gusts that could reach 65 mph. Forecasters also note that an isolated tornado cannot be ruled out as these storms develop and track across the region. The greatest uncertainty remains the exact location and timing of the strongest storm cells.
The threat extends across several counties, including Minnehaha, Lincoln, and Turner in South Dakota, as well as Lyon, Sioux, and Clay counties in Iowa. Drivers along Interstates 29 and 90 should remain vigilant, as travel could become difficult during the most intense periods of the storms. Residents are advised to secure loose outdoor furniture and have a method for receiving weather alerts throughout the day.
Following Monday’s unsettled weather, there is another chance for showers and thunderstorms on Tuesday, with a high near 81 degrees. The middle of the week remains active before conditions improve for Juneteenth. Thursday is expected to be sunny with a high of 86 degrees, offering a pleasant break. By the end of the week, significant heat and humidity will build, with heat indices potentially climbing above 100°F.
Your Five-Day Sioux Falls Outlook:
- Monday: High of 89°F. A 40% chance of severe thunderstorms, mainly after 2 p.m.
- Tuesday: High of 81°F. Showers and thunderstorms are likely, mainly after 4 p.m.
- Wednesday: High of 78°F. A 40% chance of showers and thunderstorms.
- Thursday (Juneteenth): High of 86°F. Mostly sunny and clear.
- Friday: High of 91°F. Mostly sunny with a chance of thunderstorms after 1 a.m.
