NOW...
PATCHY DENSE FOG CONTINUES ACROSS PORTIONS OF NORTHERN ILLINOIS
ALONG AND NORTH OF INTERSTATE 80 AND WEST OF MCHENRY AND KANE
COUNTIES. WITH MELTING SNOW PACK AND WARM AIR OVERRUNNING...EXPECT
PATCHY DENSE FOG TO CONTINUE THROUGH THE AFTERNOON. IN SOME
LOCATIONS VISIBILITIES COULD BE AS LOW AS ONE EIGHTH OF A MILE.