Change to polygon warning system - ABC 33/40 - Birmingham News, Weather, Sports

Change to polygon warning system

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The Calhoun County EMA is reminding residents to have a NOAA radio handy as the agency changes to the tornado warning polygon system.  The EMA in the future will only activate sirens located within the National Weather Service (NWS) tornado warning polygon.  

According to an EMA news release, "'Polygon' is the technical term for the outline or box drawn on a map to represent the danger zone or cone path projected for severe storms."

The Calhoun County EMA suggest these tips for residents who hear the outdoor warning sirens.  From now on, residents who hear outdoor warning sirens should:
·       Always take the warning seriously – don't waste time trying to look for the tornado.
·       Always assume the threat is real – even though false alarms do occur, every storm for which a tornado warning is issued still has the potential to down trees, damage homes, and cause injuries.
·       Always take immediate action to find safe shelter from the storm – do not delay moving to a safe shelter.

They also suggest you sign up for Nixle text message alerts by texting CALHOUNEMA to 888777 or visiting and have access to a TV or battery-powered radio during severe weather.