The National Weather Service says brief period of icing possible this morning:
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
714 AM EST THU FEB 20 2014…A BRIEF PERIOD OF ICING POSSIBLE EARLY ON COLD SURFACES…
RAIN WILL CONTINUE THIS MORNING ALONG WITH A FEW THUNDERSTORMS. AIR TEMPERATURES ARE GENERALLY ABOVE FREEZING BUT THE GROUND REMAINS FROZEN AND IS ALLOWING RAIN TO FREEZE ON CONTACT IN SPOTS. A BRIEF PERIOD OF LIGHT ICING CAN BE EXPECTED FOR A FEW HOURS ON UNTREATED SURFACES…ESPECIALLY ON BRIDGES…SECONDARY ROADS…PARKING LOTS AND SIDEWALKS. SLIPPERY CONDITIONS SHOULD BE ANTICIPATED EARLY UNTIL TEMPERATURES WARM FURTHER AS HEAVIER RAIN MOVES IN.