Indy residents may been woken up to the sounds of outdoor warning sirens in the early morning ... The warning was issued when a tornado watch was also in effect for Central Indiana.

Each county will activate sirens county-wide or based on the polygon-based tornado warning. The polygon warning system means, that when the National Weather Service issues a tornado warning ...

But the tornado sirens in Valley View — where seven people were killed and more than 100 injured — were not working in the small town Saturday night. Categorized as a high EF-2 by the National ...

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 ...