At least 34 twisters reported in Texas, Arkansas, Louisiana, Mississippi and Tennessee; Residents preparing for extensive damage

These are the same areas that were just hit by tornadoes Monday afternoon and night, and tonight's outbreak is expected to be worse than Monday's. Large, long-track tornadoes are a major concern.

As of 11:30 p.m. EDT, there have been 34 tornado sightings from northeastern Texas to western Kentucky and Mississippi. These tornadoes have caused extensive damage in Arkansas, Mississippi and Texas.

A tractor trailer was blown off of Highway 165 near Coy, Ark. Cars were reported off the highway and trees were snapped near Marshall, Texas. The Groesbeck, Texas fire station was damaged by a tornado as well. Damage in other tornadoes includes structural damage, downed power lines and trees.

"It's a very dangerous day," said AccuWeather.com Senior Meteorologist Henry Margusity. "It's the kind of day where tornadoes could cause massive destruction."

The violent thunderstorms are racing into the western Tennessee Valley, then will shift farther east through the Tennessee and Ohio Valleys Wednesday into Wednesday night.

The threat Wednesday includes Meridian, Miss., Birmingham and Huntsville, Ala., and Nashville and Knoxville, Tenn.