The National Weather Service has issued a winter storm warning until Wednesday for California’s Sierra Nevada mountain range. The worst of the storm will hit on Tuesday.

Heavy snow is expected for higher elevations with wind gusts as high as 50 mph (81 kph).

Snow-covered roads and travel delays are likely with “very difficult travel” expected above 5,500ft (1,676m) , according to the National Weather Service.

Meanwhile, central California is expecting another atmospheric river event on Tuesday after experiencing a similar one last week.

And in the Pacific Northwest, communities are still recovering after last week’s bomb cyclone, an intense weather event that takes place when air pressure quickly drops off the coast.

The storm caused mass flooding and power outages for hundreds of thousands of people.

The affected areas could face even more wet weather this week.

The National Weather Service is predicting a low pressure system that will cause costal rain for Washington, Oregon and California.

Around 80 million Americans will travel at least 50 miles (80km) from their home over the holiday, according to insurance company AAA. Around 71 million will travel by car, partly due to petrol prices that are lower than they were during the Thanksgiving holiday last year, AAA says.

The US Transportation Security Administration (TSA), which provides security at US airports, predicts that the busiest day to fly will be on Sunday, 1 December, when people are returning home.

The agency is preparing to screen over three million passengers that day.