tornado warnings en Indiana Finalizing Guidelines For Tornado Sirens <p><em>From the Associated Press</em></p><p>Indiana officials are working to formalize regulations for tornado sirens, but some counties could decide not to install them.&nbsp;</p><p>The regulations being finalized by the Indiana Department of Homeland Security allow each county to decide whether it needs sirens.</p><p>The agency recommends sirens for counties with more than four homes per acre and&nbsp;for urban and commercial areas with more than 2,500 people present per square mile during the day. Sirens also are recommended near major highways.&nbsp;</p> Tue, 26 Jun 2012 21:12:22 +0000 Rick Howlett 810 at Indiana Finalizing Guidelines For Tornado Sirens