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?

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.

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.