Katy, TX News (July 31, 2015) – Beginning today at 12 p.m. the City of Katy will resume testing the three remaining outdoor sirens on the last Friday of each month. The warning sirens will be tested with a loud, short burst for about 30 seconds. In the event a tornado is spotted, the siren will be activated for a long continuous blast. Residents and business owners should have a plan to seek shelter, preferably in an interior room without windows and “hunker down” until the weather has cleared to a point they feel safe to come out. The City does not have an “all clear” signal and the sirens will not be tested on a Friday if the weather is bad. It is recommended that citizens utilize a weather radio or monitor local weather stations during this time.