A snowstorm is causing significant travel disruptions across the United States, with flight cancellations and delays affecting travelers at Philadelphia International Airport and beyond.

The entire Delaware Valley is under a winter storm warning as more than a foot of snow could fall in some spots around the region.

Customs and Border Patrol has installed Enhanced Passenger Processing at Philadelphia International Airport, which uses facial recognition to identify U.S. citizens returning from international travel,

Recent measles cases and possible exposures have been linked to ongoing outbreaks in the U.S. and internationally.

After more than 9 inches of snow fell in Philadelphia on Sunday, the region will need some time to get back to normal. SEPTA, New Jersey Transit and Philadelphia International Airport will be open Monday, officials say, but customers may still face cancellations, delays and disruptions as they ramp up to normal operations.

What you should knowSnow has switched over to sleet across Philadelphia after as much as 7 inches blanketed the region. Freezing rain also remains a possibility. 600 pieces of equipment, 1,000 employees and 2,

Here’s what to know about this weekend’s storm, from the forecast and weather advisories to travel impacts and more.