March 6: The heavy wet snow prompted Virginia Gov. Bob McDonnell to declare a state of emergency as more than 200,000 residents lost power.  In Chicago, a roof collapsed under the weight of the snow and parts of Ohio and Pennsylvania were also hit hard. NBC’s Tom Costello reports.  (Nightly News)The heavy wet snow brought on Virginia Gov. Bob McDonnell to declare a state of emergency as greater than 200,000 residents misplaced power.  In Chicago, a roof collapsed beneath the burden of the snow and parts of Ohio and Pennsylvania had been additionally hit arduous. NBC’s Tom Costello reviews. (Nightly News)