Wind Advisory and Red Flag Warning in Effect for Sioux Falls and Surrounding Areas

Sioux Falls, South Dakota, and the surrounding tri-state region of Minnesota, Iowa, and South Dakota are experiencing strong winds, prompting weather alerts. A Wind Advisory remains in effect until 3:00 PM CST today, February 19, 2026, while a Red Flag Warning is in effect for areas along and south of Interstate 90 from 10:00 AM to 6:00 PM CST.

Wind Advisory Details

The National Weather Service in Sioux Falls reports west winds of 25 to 35 mph with gusts reaching up to 50 mph. Affected communities include Sioux Falls, Spirit Lake, Storm Lake, Orange City, Sioux Center, Spencer, Worthington, and Luverne. National Weather Service – Sioux Falls

These winds pose a risk of blowing unsecured objects, downed tree limbs, and isolated power outages. Drivers, especially those in high-profile vehicles such as trucks, vans, or RVs, are urged to exercise extreme caution.

Red Flag Warning Details

A more serious Red Flag Warning is in effect for areas along and south of Interstate 90. Relative humidity is expected to drop as low as 15 percent, combined with the strong wind gusts, creating a dangerous environment for wildfires. 973 KKRC

Any fire that ignites under these conditions can spread rapidly. Outdoor burning is strongly discouraged across affected counties in Iowa, Minnesota, Nebraska, and South Dakota.

Current Conditions in Sioux Falls

As of 12:56 AM CST on February 19, 2026, the weather in Sioux Falls at Foss Field (KFSD) is fair with a temperature of 19°F (-7°C). Humidity is 81%, and the wind is from the north at 12 mph. The wind chill is 6°F (-14°C). National Weather Service – Sioux Falls

Extended Forecast

Here’s a look at the forecast for the coming days:

• Thursday: Partly sunny, with a high near 32°F. Breezy, with north winds 10 to 20 mph and gusts up to 30 mph.
• Thursday Night: Cloudy, with a low around 14°F. Northwest wind around 15 mph, with gusts up to 25 mph.
• Friday: Partly sunny, with a high near 29°F. Northwest wind 10 to 15 mph, with gusts up to 20 mph.
• Friday Night: Partly cloudy, with a low around 11°F.
• Saturday: Mostly sunny, with a high near 31°F.
• Sunday: Sunny, with a high near 27°F.

Safety Recommendations

• Secure loose outdoor objects.
• Stay alert to changing weather conditions.
• Avoid any activity that could spark a fire.
• Exercise caution while driving, especially in high-profile vehicles.