President Obama declared a state of emergency in Missouri on Thursday.
All critical, first priority and second priority snow routes have been cleared.
Two state Health Department buildings were evacuated because of snow on the roof. Workers are expected to return Monday.
Although the National Weather Service is forecasting warmer temperatures through the weekend, there is a chance for some snow accumulation.
Roofs collapsed under the weight of snow in the Northeast, wind chills dipped below 30 in parts of the Midwest, and people are still trying to dig out after a winter storm struck most of the nation Tuesday and Wednesday.
Gov. Jay Nixon asked the federal government Wednesday for an emergency declaration for all of Missouri's 114 counties to help with the costs of responding to the snowstorm.
After a snowfall, ground-foraging birds can't find the seeds they normally feed on.
The Weather Service cites high levels of stream flow, soil moisture and snowpack in the upper Mississippi valley.
An almost record setting 17-plus inches of snow blanketed Columbia and much of the Midwest early Tuesday morning. With roads becoming impassable and even walking a challenge, a fact to which my rear can attest, city services and many businesses shut down.
The storm total for snowfall in Columbia is 17.7 inches as of Wednesday morning. Despite gusting winds, a tried-and-true process ensures measurements are sound.
The interstate was shut down on Tuesday because of whiteout conditions caused by a winter storm that struck most of the country. Interstate 44 remained closed on Wednesday morning.
Southwest, central and northeast Missouri were hit particularly hard by the storm. Lingering problems include treacherous roads and power outages.
The city of Columbia and the Missouri Department of Transportation are working to clear snow on major roads and residential streets so residents can get around safely.
Snow buildup can cause brakes to fail and cars to vibrate violently.
The monstrous storm brought a huge portion of the country to a halt. Schools and universities closed, roads were shut down and some areas saw power outages.
A massive winter storm knocked out power in Ohio, stranded motorists and halted most of daily life on Tuesday and into Wednesday across the nation.
La Niña, a periodic cooling of the surface temperatures of the tropical Pacific Ocean, has affected weather in most of the United States and might be contributing to the floods and storm battering Australia.
The storm brought 20 inches of snow to Hannibal and near that in Columbia and 18 inches in Jefferson City and Joplin. If not unprecedented, the storm was extremely rare, a Weather Service meteorologist said.
Snow started falling across Columbia this morning. The snowfall totals are expected to reach between 17 and 21 inches.
A winter storm hit Columbia early Tuesday morning and is expected to leave 14 to 21 inches of snow by Wednesday afternoon.