This event, as horrific as it is, I hope can be used as a study of the dissemation of weather information in the "always on" media age. Not everyone was killed as they tried to shelter. Weather people didn't get the information, or didn't follow it, will be figured out later. However, with this system being advertised for 3+ days, and with the recent weather, its hard to imagine people not being 'on edge'.
And personally, I hope the news outlets find out as day breaks they have doube or triple counted some of the fatalities. I hope.