The National Weather Service has issued a Special Weather Statement:
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1026 PM EST FRI FEB 21 2014…PATCHY ICE OVERNIGHT…
PATCHES OF ICE WILL FORM WHERE WATER HAS PONDED ON ROADS FROM RECENT RAIN AND MELTED SNOW. TEMPERATURES ARE EXPECTED TO HOVER AT OR BELOW FREEZING AT THE SURFACE OVERNIGHT AND INTO THE MID MORNING HOURS.
USE CAUTION WHEN DRIVING. WHILE THE ROADWAY MAY APPEAR WET…IT WILL LIKELY BE COVERED IN A THIN LAYER OF BLACK ICE.