Washington, where many federal government offices are closed due to the US government shutdown, is expected to receive 15 cm to 20 cm of snow from this storm, according to the National Weather Service.
The storm hit Kansas and Missouri on Friday and pummeled those states again on Saturday as it extended into parts of Iowa, Illinois, Indiana and OH, said U.S. Weather Prediction Center meteorologist Andrew Orrison.
The National Weather Service reported 8 to 12 inches (20 to 30 cm) fell on the city through Saturday morning, with about another 10 cm to come before the storm shifts east through Saturday evening.
Across the country's midsection, 50 million people are under a winter storm advisory, watch or warning. The Missouri Department of Transportation (MoDoT) on Twitter warned residents not to travel in the storm if it isn't necessary.
The University of Missouri men's basketball game at the University of SC was also canceled Saturday because of weather-related travel issues, according to the team's Twitter account. Major cities in the zone, including St. Louis, could get more than 6 inches of snow. The National Weather Center said 17 inches of snow has fallen in central Missouri.
"This storm may become an overachiever when it comes to snow and ice". In St. Louis on Friday night, parts of I-44, I-55, I-64 and I-70 were partially closed because of current snowfall, and more is on the way.
Some locales along the projected path of Gia could receive up to a foot of snow through Sunday. Very heavy snow is occurring across central and south IL, with lighter snow amounts north of there and rain to the south. Snow totals across metropolitan Chicago will range from an inch or less at the Wisconsin border to a couple inches in the city and three or four inches at Interstate 80.
Meteorologists expect snow to come down over a wide area Saturday evening, from North Carolina to Pennsylvania and from Kansas to New Jersey.
Winter storm warnings have been issued from Kansas to southwestern OH as well as in parts of the Virginias, southern Maryland and North Carolina.
There is a small chance that the southern Appalachians get enough freezing rain and sleet to turn into an ice event Saturday into Sunday.
"There's snow time like Showtime", the Chiefs said on Twitter, sharing video of the team's quarterback Patrick Mahomes arriving at the stadium in the snow.
The Southeast has seen abundant precipitation in December and January, and the additional rain could put a strain on rivers already high.