NEW 3:10 p.m. Tuesday: A winter storm warning has been issued for Ford and Iroquois counties from 1 a.m. to 1 p.m. Wednesday.
LINCOLN - The National Weather Service in Lincoln has issued a winter weather advisory for snow, in effect from 10 p.m. Tuesday to 1 p.m. Wednesday.
Rain will start over much of central Illinois this evening then change to snow late evening from Rushville to Bloomington northward. The change to snow will likely occur shortly after midnight around Springfield and Jacksonville, then between midnight and 3 a.m. for areas from Decatur east to Danville.
The snow will end from west to east Wednesday morning.
Accumulations of three to five inches are likely from Rushville to Danville northward. Locally higher amounts are possible from Bloomington north and east.
Closer to the Interstate 72 corridor, two to three inches are likely. The heaviest snow is most likely between midnight and sunrise.
Northerly winds will increase overnight and range from 20 to 30 mph, with gusts of around 40 mph possible near the I-57 corridor into Wednesday morning.
Roads are expected to become slushy as the snow accumulates, then as temperatures fall into the 20s overnight, the slush will freeze, causing hazardous driving conditions. Visibility is also expected to be reduced in the heavier snow areas.
The wet snow is expected to keep blowing and drifting to a relative minimum, although areas near Champaign and Danville are more likely to see some blowing snow due to higher wind speeds in that area.