Seven states in Southern US were hit by devastating tornadoes and violent storms. Atleast 284 people were killed in the country's deadliest series of twisters in almost 40 years.

According to reports, more than 160 twisters comprised the bunch of powerful tornadoes brought destruction moving from west to east over several days along with violent storms. Some neighborhoods became ghost towns as other areas have trees and cars flipped over and power line dangling across the streets.

Insurance experts believe that they would run into billions of dollars after estimating the scale of destruction. Tuscaloosa ang Birmingham cities in Alabama gained the greatest impact of the natural disaster.

Jose Miranda, an executive with the catastrophe risk modeling firm EQECAT, told Reuters in an interview, "In terms of the ground-up damage and quite possibly the insured damage, this event will be of historic proportions."

Governor Robert Bentley accounted that Alabama had 184 fatalities and declares it as the “worst-hit state” which experienced “massive destruction of property.”

Josh Nagelberg, a meteorologist at AccuWeather.com reported the 1.6 kilometer-wide twister which tore through the town of Tuscaloosa made the largest ever hit to the state of Alabama.

On Friday President Barack Obama said is expected to visit Alabama to view the destruction and have a meeting with Governor Bentley. The US President declared a state of emergency for Alabama and ordered federal aid.

Other state officials reported 32 killed in Mississippi, 33 in Tennessee, 11 in Arkansas, 14 in Georgia, eight in Virginia and two in Louisiana.
Miranda said the estimated costs would be even with the$1.58 billion cost of damage as an Oklahoma City tornado outbreak in 1999 occurred and the $4.5 billion of damage caused by the 2003 tornado outbreak in Kansas, Missouri, Arkansas and Oklahoma.

The Browns Ferry nuclear power plant in Alabama will be closed down for weeks as its workers repair the damaged transmission lines. At least 1 million people in Alabama were left with damaged power lines.