US President Barack Obama declared Oklahoma State as a disastrous area after a massive tornado struck the State last Sunday and Monday. 
President Obama directed to send federal aids to support the efforts of State and local authorities. 
It is considered one of the most devastating tornadoes have swept the State, killing 91 people, including 20 children, destroying cars and homes and causing fires in several buildings, leaving a tragic scene behind it. 
 

Source: BNA