By Jeffrey Smith, The News On 6

TULSA, OK -- With the storm front fast approaching, a viewer wanted to know how prepared Tulsa is to handle a tornado threat.

Norma from Owasso asks, "What do tornado sirens sound like, and is it true they're only meant to be heard outside?"

The siren board is lit up like a Christmas tree. It's a test to make sure all 84 of the city's emergency sirens are in working order.

With severe storms set to roll into the area, the weekly test takes on added importance.

But because there's a chance of real tornadoes hitting Tulsa on Wednesday night, Emergency Management Director Roger Jolliff ran a silent test.

If Tulsa emergency directors decide there's a flood risk, that has its own sound.

Jolliff monitors weather information as fronts move in. He says the threat of severe weather is at its height in early May, and if it happens, he'll be in contact with dozens of local agencies.

"We just count on something severe," he said.

Jolliff says the biggest misconception the public has about these sirens is that that you should be able to hear them even inside of your house. He says that's just not true.

"Don't expect to hear the sirens inside your home, because they're an outside warning system," Jolliff said. "They're not designed to penetrate the walls of your home, especially in a storm."

Jolliff says the results are in and if a warning is issued, all the sirens are ready to go.