• There are questions about why there was no warning before a tornado ripped through Tulsa, Oklahoma

The National Weather Service confirmed an EF2 tornado touched down. The rare August tornado ripped roofs off homes and knocked down trees. About 30 people were hurt, and two people had severe injuries. 

The tornado struck roofs and knocked down trees. About 30 people were hurt, and two people had severe injuries. 

About 30 people were injured. 

At 1:19AM the tornado touched down in Tulsa and there were signs of it on radar.

But the sirens never went off because the National Weather Service did not issue a tornado warning until after the twister had moved on at 1:25 a.m.

Roger Jolliff, director of the Tulsa Emergency Management agency, said they did not sound the sirens because the twister had already moved on to the neighboring city by the time the National Weather Service issued its warning, reports CBS News correspondent Omar Villafranca. 

"I said if it's in Broken Arrow, we will not sound our sirens because the threat at that time that we had got this information... was going into Broken Arrow," Jolliff said.

The National Weather Service said they used two different radars to follow the storm system, and when the closer radar showed the tornado on the ground, they issued the tornado warning.