A state of emergency in a remote area of eastern Kentucky. A train derailment causing a chemical fire and concerns about toxic fumes. Thanksgiving disrupted for hundreds of families. That fire has been extinguished and evacuation orders and notices have now been lifted. ABC's. Alex Pochet has more.

Tonight thanksgiving upended for dozens of Kentucky families after authorities say a fiery train derailment spilled dangerous chemicals, prompting evacuations.

We're having Thanksgiving tomorrow. Guess we're not. It was just really scary because we don't know how long this is.

Governor Andy bashir wednesday declaring a state of emergency in rockcastle county, about 2 hours southeast of Louisville. Crews spending hours extinguishing flames from the spill. Train company CSX says two of the 16 derailed cars were carrying molten sulfur. It releases sulfur dioxide when it burns, which can cause respiratory problems.

That chemical hit me, and I had a real bad asthma attack.

Cleanup crews bringing in specialized equipment and conducting air monitoring in the area. In that immediate surrounding area, there has been no detectable readings since 12:30 p.m.. Tonight, a shelter set up at a local middle school for families. And CSX says it's handed out thanksgiving dinners for families and hotel rooms to more than 100 people and 40 pets. Lindsay. Authorities say tonight it's safe for people to return home, and a federal team is now on site investigating the cause of that derailment. Lindsay.

Alex, thank you.

Hi, everyone. George Stephanopoupoulos here. Thanks for checking out the ABC news YouTube channel. If you'd like to get more videos, show highlights and watch live event coverage, click on the right over here to subscribe to our channel. And don't forget to download the ABC news app for breaking news alerts. Thanks for watching.