A winter weather system arrives Wednesday, especially in the afternoon and evening, bringing the risk for a wintry mix of precipitation including ice accumulations.

The Allen County Highway Department began pre-treating main problem roads today with calcium chloride to reduce ice build-up, with staff expected to work through the night to cover the storm. The City of Fort Wayne Street Department also began pretreating main arteries with liquid brine.

What's the difference between a winter storm watch, an advisory and a warning? And can they mean different things for different parts of Indiana?

ARLINGTON, Va. − A wall of snow, ice and rain was sweeping across the Northeast on Thursday, the first in a series of storms forecast to wallop much of the nation's northern tier over the next several days.