The following actions are recommended by the NWS: 

Inside: Go to the basement or a safe room and assume a tornado safety position. If you don't have either, proceed to the lowest innermost room away from windows. Do not go to large open rooms such as cafeterias, gymnasiums, or auditoriums.

Outside: Seek shelter inside a sturdy building immediately.

In a vehicle: Being in a vehicle during a tornado is not safe. The best course of action is to drive to the closest shelter. If you are unable to make it to a safe shelter, either get down in your car and cover your head, or abandon your car and seek shelter in a low lying area such as a ditch or ravine.

Stay weather-ready: Continue to monitor local news or a NOAA Weather Radio to stay updated about watches and warnings.

Keep in mind

The outdoor warning (siren) system is designed to notify those who are outdoors of the emergency condition. When indoors, the best way to receive severe weather notifications is through a NOAA weather radio.

Be mindful of persons who are deaf or hard of hearing, or of those who may not be aware of emergency notifications because they are sleeping, watching TV, or listening to music.

If you know of others in the building, please inform them of emergency conditions as you make your way to safety. If you can do so safely, help those who may need assistance to a safe area.