Blizzard conditions, a “bomb cyclone” and a rush of freezing arctic air threaten to snarl post-holiday travel and create potentially dangerous conditions across the country through the beginning of the week, particularly in the Midwest and Northeast.

Heading home after Christmas? Forecasters warn travel could be disrupted across the Northeast due to a snowstorm.

A winter storm could make road travel dangerous and disrupt area flights as people begin their return journeys home from holiday destinations.