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Airports and highways are expected to be jam-packed during Thanksgiving week, a holiday period likely to end with another record day for air travel in the United States.

AAA predicts that nearly 80 million Americans will venture at least 50 miles from home between Tuesday and next Monday, most of them by car. However, travelers could be impacted by ongoing weather challenges and those flying to their destinations could be grounded by delays brought on by airline staffing shortages and an airport service workers strike.

Here's the latest:

Federal Aviation Administration Administrator Mike Whitaker said last week that he expects his agency to use special measures at some facilities to deal with an ongoing shortage of air traffic controllers.

In the past, those facilities have included airports in New York City and Florida.

“If we are short on staff, we will slow traffic as needed to keep the system safe,” Whitaker said.

The FAA has long struggled with a shortage of controllers that airline officials expect will last for years, despite the agency’s lofty hiring goals.

▶ Read more about Thanksgiving travel across the U.S.

Workers who clean airplanes, remove trash and help with wheelchairs at Charlotte’s airport, one of the nation’s busiest, went on strike Monday to demand higher wages.

The Service Employees International Union announced the strike in a statement early Monday, saying the workers would demand “an end to poverty wages and respect on the job during the holiday travel season.” The strike was expected to last 24 hours, said union spokesperson Sean Keady.

Employees of ABM and Prospect Airport Services cast ballots Friday to authorize the work stoppage at Charlotte Douglas International Airport, a hub for American Airlines. The two companies contract with American, one of the world’s biggest carriers, to provide services such as cleaning airplane interiors, removing trash and escorting passengers in wheelchairs.

▶ Read more about the Charlotte airport workers’ strike

Parts of the Midwest and East Coast can expect to see heavy rain into Thanksgiving, and there’s potential for snow in Northeastern states.

A storm last week brought rain to New York and New Jersey, where wildfires have raged in recent weeks, and heavy snow to northeastern Pennsylvania. The precipitation was expected to help ease drought conditions after an exceptionally dry fall.

Heavy snow fell in northeastern Pennsylvania, including the Pocono Mountains. Higher elevations reported up to 17 inches (43 centimeters), with lesser accumulations in valley cities including Scranton and Wilkes-Barre. Around 35,000 customers in 10 counties were still without power, down from 80,000 a day ago.

In the Catskills region of New York, nearly 10,000 people remained without power Sunday morning, two days after a storm dumped heavy snow on parts of the region.

Precipitation in West Virginia helped put a dent in the state’s worst drought in at least two decades and boosted ski resorts as they prepare to open in the weeks ahead.

▶ Read more about Thanksgiving week weather forecasts

Two people died in the Pacific Northwest after a rapidly intensifying “ bomb cyclone ” hit the West Coast last Tuesday, bringing fierce winds that toppled trees and power lines and damaged homes and cars. Hundreds of thousands lost electricity in Washington state before powerful gusts and record rains moved into Northern California.

Forecasters said the risk of flooding and mudslides remained as the region will get more rain starting Sunday. But the latest storm won’t be as intense as last week’s atmospheric river, a long plume of moisture that forms over an ocean and flows over land.

“However, there’s still threats, smaller threats, and not as significant in terms of magnitude, that are still going to exist across the West Coast for the next two or three days,” weather service forecaster Rich Otto said.

As the rain moves east throughout the week, Otto said, there’s a potential for heavy snowfall at higher elevations of the Sierra Nevada, as well as portions of Utah and Colorado.

California’s Mammoth Mountain, which received 2 feet (0.6 meters) of fresh snow in the recent storm, could get another 4 feet (1.2 meters) before the newest system clears out Wednesday, the resort said.

Another round of wintry weather could complicate travel leading up to the Thanksgiving holiday, according to forecasts across the U.S., while California and Washington state continue to recover from storm damage and power outages.

In California, where two people were found dead in floodwaters on Saturday, authorities braced for more rain while grappling with flooding and small landslides from a previous storm.

Here’s a look at some of the regional forecasts:

▶ Read more about Thanksgiving week weather forecasts

Charlotte Douglas International Airport is seen, Friday, Nov. 22, 2024, in Charlotte, N.C. (AP Photo/Erik Verduzco)

FILE - As the Thanksgiving holiday approaches, travelers walk through Reagan Washington National Airport in Arlington, Va., on Nov. 22, 2023. (AP Photo/Susan Walsh, File)

Travelers wait at Hartsfield-Jackson International Airport, Friday, Nov. 22, 2024, in Atlanta, as the Thanksgiving travel season kicks off. (John Spink/Atlanta Journal-Constitution via AP)