SYNOPTIC SCALE SNOW WILL GIVE WAY TO SCATTERED LIGHT LAKE EFFECT
SNOW (LES) SHOWERS LATE MORNING THROUGH MID-AFTERNOON. LATE THIS
AFTERNOON, AND ESPECIALLY THIS EVENING, LES INTENSITY IS EXPECTED TO
INCREASE AS INVERSION HEIGHTS RISE AND AN AXIS OF ENHANCED LOW-LEVEL
CONVERGENCE SETTLES OVER NORTHEAST ILLINOIS. LES MODE (SINGLE STRONG
BAND VS. MULTIPLE LIGHTER BANDS) REMAINS UNCLEAR, BUT THE POTENTIAL
FOR A PERIOD OF HEAVIER LES EXISTS DURING THE EVENING FOR ORD/MDW,
AND AFTER MIDNIGHT FOR GYY
per lot aviation afd 12z