This morning, areas of dense fog in Sioux Falls and across the tri-state area will reduce visibility to less than one-half mile and make roads very slippery. Give yourself plenty of extra time to get to your destination this morning.
A winter storm system will bring big changes to our weather over the next couple of days. Snow and blowing snow are likely today, tonight and tomorrow and will be followed by bitter, arctic cold temperatures. A Winter Storm Warning is in effect for northern South Dakota. A Winter Weather Advisory is in effect along and north of I-90. The Winter Weather Advisory does not include the city of Sioux Falls.
In Sioux Falls, areas of light freezing rain are possible this morning. The freezing rain will change to just rain as temperatures warm above freezing later this morning. Light rain showers are possible through early afternoon. Rain will change to snow this afternoon as temperatures drop back below freezing. Light snow will continue through tonight and into tomorrow. 2 to 5 inches of accumulation is expected in Sioux Falls and across the tri-state area with heavier amounts possible just north of Sioux Falls. Wind will be fairly light across the region today but will shift to the northwest and increase to 15-25 mph tonight. Gusts to 30 mph are likely from late tonight through tomorrow night, creating blowing snow at times especially in rural areas.
In Aberdeen, Watertown and Pierre: Snow has already developed across portions of central and northern South Dakota and will continue today, tonight and into tomorrow. Later this afternoon and tonight strong northwesterly wind gusts to 35 mph will create blowing and drifting snow reducing visibility significantly at times. 3-5 inches of accumulation is possible in Pierre and Watertown, 5-7 inches is possible in Aberdeen.