The weather this holiday weekend was anything but calm for residents in the southern United States. At least 43 people have been killed by floods and tornadoes this Christmas weekend, according to Reuters. Severe weather left the South, Southwest, and Midwest in shambles, leveling homes and halting travel.

The National Weather Service determined that the tornado that hit Garland, in northern Texas, was an EF-4 tornado, according to CNN. Rowlett was hit by an EF-3 tornado and Copeville was hit by an EF-2 tornado.

Search and rescue teams have been working around the clock to find survivors all weekend.

"As of right now, we are still in the search-and-rescue mode. We still have some homes that have been demolished and not everyone in the homes has been accounted for," said Rowlett police spokesman Detective Cruz Hernandez, according to Fox News.

The tornadoes that tore through northern Texas on Saturday resulted in at least 11 deaths. In Missouri and Illinois, at least 13 people have been killed as a result of flash floods.

Severe storms have been causing devastation in these areas since before Christmas, where tornadoes killed at least 18 others.

As a result of this severe weather, at least 1100 flights were cancelled across the country during the busiest travel weekend of the year.

More severe weather is still on the way, severe weather and blizzard warnings in effect through Monday.