Sioux Falls, South Dakota – Any spark could turn into a fast-moving fire by Saturday afternoon as powerful winds and dry air align across eastern South Dakota and surrounding states.
According to the National Weather Service in Sioux Falls, south winds will gust between 35 and 45 mph while relative humidity drops as low as 15 to 20 percent by midday Saturday. These conditions create an environment where fires can ignite easily and spread rapidly, especially in areas with dry grass.
The risk stretches across much of eastern South Dakota, including Sioux Falls, Brookings, Mitchell, and Yankton, and extends into northwest Iowa and southwest Minnesota. Along Interstate 29, crosswinds could also impact travel, particularly for high-profile vehicles, while increasing the chance of roadside fire starts.
Officials urge residents to avoid all outdoor burning, including trash fires and brush piles. Even small actions like tossing cigarettes or operating farm equipment in dry fields could trigger a fire. Using equipment with spark arrestors and keeping water sources nearby can reduce risk.
Conditions remain elevated through Saturday evening, with the most dangerous window centered on the afternoon hours. Additional advisories may be issued if winds strengthen or humidity drops further.
