Event:Special Weather StatementAlert:

...Brief Period of Accumulating Snow Tonight... 
Rain will change to all snow around midnight across northwest 
Illinois and extreme eastern Iowa. The snow is expected to last 
only for a few hours but may be moderate to locally heavy. Total 
accumulations of 1 to 3 inches is possible. 
The heavier rates of snow are expected to overcome warmer-pavement temperatures and result in some roads seeing slushy accumulation. With temperatures falling into the upper 20s later 
tonight, some of this slushy accumulation will likely remain into 
the Thursday morning commute. 

If traveling overnight, plan for the potential for sharply 
reduced visibility and some slowed travel. Allow extra travel 
time, including for the morning commute Thursday due to any 
lingering slush. 
Roads, bridges and overpasses may especially be slick and 
hazardous with the snow and ice accumulations. Be extra cautious 
on bridges and overpasses.