Tornado Warning in the Omaha Area!

Just as I was about to get changed, the announcer cleared the pool due to a tornado warning. The sirens went off and the pool cleared fairly quickly! We have been directed to move to a safer area within the building. A lifeguard told me that they've had 3 tornados on the ground in the last month. This is certainly a new experience, I've never delt with a real tornado warning.