That's why you may hear sirens sounding on Saturday, April 6 in several Des Moines metro-area counties. When is test day for outdoor tornado warning sirens in Des Moines metro counties?

PASADENA, Texas (KTRK) -- It's been a little over two years since the City of Pasadena was hit by an EF-3 tornado in the middle of the afternoon. Two years later, 30 new sirens are standing tall ...