Freezing rain and drizzle is disrupting travel from Central Texas to the Great Lakes, with ice-glazed roads leading to hundreds of traffic accidents, including one in Kentucky that killed a toddler.

Hundreds of flights were canceled Wednesday at Dallas-Fort Worth International Airport as Texas, Oklahoma, Missouri and Arkansas braced for an ice storm.

More than half an inch of ice could accumulate in parts of the Ozarks through Friday morning, while another area of freezing rain was expected to hit south-central Pennsylvania and western Maryland, the National Weather Service said.

In western Kentucky, ice on a bridge caused multiple collisions that left a toddler dead and closed interstate lanes for hours, officials said.

Seven collisions involving 12 tractor-trailers and 6 passenger cars were reported beginning late Wednesday on Interstate 24 in Marshall County due to ice on the Tennessee River Bridge, Kentucky State Police said in a statement.

In one crash involving two semi-trailers, an 18-month-old unrestrained child was ejected and then hit by a car, police said. The toddler was declared dead at the scene by the Marshall County coroner.

In Arkansas, dozens of schools were closed or switched to remote learning on Thursday as another round of freezing rain was expected by midday. Airlines canceled more than 1,700 U.S. flights Thursday, according to the FlightAware.com tracking site. Many of them were at the Dallas-Fort Worth airport, where temperatures were expected to top out above freezing only briefly late on Thursday afternoon.

DFW Airport is the biggest in the American Airlines network, and American had canceled 21% of its Thursday flights by Wednesday night, according to FlightAware. Meanwhile, heavy snow was expected in upstate New York and New England later this week, with more than 6 inches possible through Saturday morning.

Winter took a fleeting break in the Northeast on Wednesday, with temperatures soaring into the 60s before plunging within hours. The warm spell sent people streaming outdoors, but it was bad news for ski resorts.

"It's not exactly what you want to see in the middle of the busiest week of the year," said Ethan Austin, spokesperson for the Sugarloaf ski area in Maine, which was busy because of school vacation week. But he was happy to hear snow was on the way.

The weather whiplash marked the second time in less than a week that there was to be a temperature swing of more than 40 degrees in 24 hours.

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COLLEYVILLE, Texas —

Authorities say a man apparently took hostages Saturday during services at a synagogue near Fort Worth, Texas.

The Colleyville Police Department tweeted Saturday afternoon that it was conducting SWAT operations at the address of Congregation Beth Israel.

FBI Dallas spokeswoman Katie Chaumont said an FBI SWAT team was also at the scene and that crisis negotiators had been communicating with someone inside the synagogue. But she could not say whether the person was armed and she declined to describe what the person had said to authorities, citing operational sensitivity.

Police were first called to the synagogue around 11 a.m. and people were evacuated from the surrounding neighborhood soon after that, Chaumont said.

There have been no reported injuries, Chaumont said, and authorities weren't certain how many people were in the synagogue.

"It’s an evolving situation, and we have a lot of law enforcement personnel on scene," Chaumont said.

Law enforcement shut down access to the roads surrounding the synagogue Saturday afternoon.

The services were being livestreamed on the synagogue's Facebook page for a time. The Fort Worth Star-Telegram reported that an angry man could be heard ranting and talking about religion at times during the livestream, which didn't show what was happening inside the synagogue.

Shortly before 2 p.m., the man said, "You got to do something. I don’t want to see this guy dead." Moments later, the feed cut out.

The man, who used profanities, repeatedly mentioned his sister, Islam and that he thought he was going to die, the Star-Telegram reported.

Colleyville, a community of about 26,000 people, is about 15 miles northeast of Fort Worth.