Sioux Falls residents should brace for a stormy Wednesday as dangerous thunderstorms push across eastern South Dakota with high winds and hail. Travel along I-29 may be disrupted as storms intensify, raising concerns for drivers and power outages.
According to the National Weather Service in Sioux Falls, storms will build Wednesday afternoon and peak into Wednesday night. Wind gusts up to 65 mph and half-dollar-sized hail are possible, along with localized flooding. Emergency officials urge residents to avoid unnecessary travel, charge electronic devices, and secure outdoor items before storms arrive.
The most active window for severe weather stretches from late Wednesday afternoon into early Thursday morning. Scattered showers and thunderstorms will continue through Thursday, with repeated rounds of heavy rain possible. While rainfall is the main concern, forecasters note that brief funnels cannot be ruled out.
Road crews and utility providers across Minnehaha, Lincoln, and Union counties are preparing for outages and debris cleanup if strong winds materialize. Drivers are advised to use caution on rural roads, where sudden water pooling and fallen branches may cause hazards.
Looking ahead, showers remain likely into Friday, before conditions gradually improve by Saturday. Highs will ease into the 70s, offering a cooler but unsettled end to the week.
Warnings remain in effect through midweek, and residents are urged to monitor updates for additional advisories.
Five-Day Forecast for Sioux Falls, South Dakota
- Wednesday: High 78. Thunderstorms likely after 1 p.m. Heavy rain possible.
- Wednesday Night: Low 62. Showers and storms continue, 80% chance.
- Thursday: High 74. Scattered thunderstorms with heavy rain.
- Friday: High 71. Showers and storms, 60% chance.
- Saturday: High 74. Mostly sunny, calmer conditions return.
