Bostonians are bracing for for dangerously cold temperatures.<br/> <br />A blast of cold weather has gripped the northeastern United States following a snowstorm.<br/> <br />It forced thousands of flights to cancel and schools to close and caused at least three deaths thus far.<br/> <br />Massachusetts Governor Deval Patrick told residents to stay home and avoid icy roadways.<br/> <br />The overnight low for Boston was forcasted at -4 F, or -20 C.<br/> <br />The bitter cold was expected to last until Saturday.
