Published: Aug 15, 2011 12:13 PM EDT
Updated: Aug 15, 2011 2:57 PM EDT

Many questions remain this morning after a deadly stage collapse in Indiana. 

It happened Saturday night right before the country music band Sugarland concert. 

Five people were killed and 40 were injured. 

According to the National Weather Service, as the line of storms approached Indiana on August 13th, a Severe Thunderstorm Watch was issued for ALL of central Indiana at 5:57PM, approximately 3 hours before the stage collapsed. (A watch is issued when conditions are favorable for severe storms: damaging winds in excess of 60 mph and/or large hail...a warning is issued when those conditions are likely or already occurring.)

As the line of storms intensified and continued east towards Indianapolis and the fairgrounds located in Marion county, the National Weather Service issued a Severe Thunderstorm Warning for Marion county and the Indianapolis area at 8:39PM.

According to the Indianapolis Police Chief, the stage collapsed at 8:55, 16 minutes after the warning was issued. Thus, a watch AND warning were in place at the time of the stage collapse...

Jennifer Stacy joins us live in the studio to try and explain how this happened.