same idea:
THE FORECAST BECOMES MUCH MORE COMPLEX WITH THE PASSAGE OF THE
SURFACE LOW SATURDAY MORNING. CAA WILL BEGIN TO TAKE HOLD IN THE
LOW- LEVELS, ALLOWING THE RAIN/SNOW LINE TO TRACK SOUTHEAST
THROUGH THE REMAINDER OF THE DAY. THERE REMAINS SIGNIFICANT
DISCREPANCIES AS TO HOW FAST THIS SOUTHEASTWARD MARCH OCCURS, WITH
SOME GUIDANCE HOLDING ON TO WARMER AIR IN THE LOW-LEVELS INTO THE
AFTERNOON. ADDITIONALLY, PRECIP RATE WILL LIKELY DICTATE PRECIP
TYPE, WITH HEAVIER RATES IN A POSSIBLE AXIS OF MODERATE
DEFORMATION PRECIP FAVORING ALL SNOW VS. A RAIN/SNOW MIX OR ALL
RAIN. SOME 00Z GUIDANCE (CMC, ECMWF) ARE SUGGESTING THIS POTENTIAL
NORTH OF I-80 LATE SATURDAY MORNING INTO SATURDAY AFTERNOON. SO,
WHILE THE CURRENT FORECAST INDICATES ONLY LIMITED ACCUMULATING
SNOW AWAY FROM THE IMMEDIATE WI STATE LINE, NOTABLE ACCUMULATIONS
ARE STILL POSSIBLE FOR NORTHERN ILLINOIS, INCLUDING THE CHICAGO
METRO NORTHWEST OF AN AURORA TO GLENCOE LINE.