When severe weather threatens, it’s important to understand and execute the proper safety procedures. Tornadoes are dangerous not only because of strong winds and hail, but also because of potential flooding, loss of electricity and flying debris.

The Federal Emergency Management Agency (FEMA) advises to be alert to changing weather conditions by listening to the radio or television newscasts for updated information and watching for approaching storms. Signs of a dangerous storm include abnormally dark, greenish sky, large hail, a dark, low-lying cloud (particularly if rotating), and a loud roar similar to a freight train. The sound of sirens means a tornado has been spotted.

Rusty Dawkins, Chief Meteorologist for ABC 6 News, was involved in the largest tornado on record, at 2.5 miles wide. The F4 tornado, which struck Hallam, Neb. in 2004, was similar to the storm Austin experienced on June 17.

“Both towns lost power, and people knew something major was happening when the power went out,” Dawkins said.

FEMA advises, in the case of a tornado warning, to take shelter in the lowest level of sturdy building, whether you are in your home, school, workplace, vehicle, or in a mobile home. Mobile homes, even if secured to the ground, offer little protection from tornadoes.

If there is no basement, go to the center of the building’s lowest-level space, such as a closet, bathroom, or an interior hallway. Keep away from windows, doors and outside walls. Place yourself under a sturdy table and use your arms to protect your head and neck.

If you are outside and unable to take refuge in a building, do not stay under an overpass or bridge. It is safer to lie flat in a nearby ditch with your hands covering your head — but be aware of potential flooding.

Dawkins pointed out one way for people to be prepared when a tornado hits: “It is very important to have a radio with battery back-up so you don’t have to rely on television or electricity to get the news,” Dawkins said.

He says the rule of thumb is to “put as many walls between you and the outside of the building as possible.”

According to the National Weather Service in La Crosse, Wis., the most common cause of injury during a tornado is flying debris, so be aware of this hazard as well.

Next time there are tornado warnings, the most important precautions you can take are to get as far below ground as possible and have a battery-powered radio on hand.