Tornado Myth cont..

Most tornado damage is due to the low pressure in the tornado causing the house to explode (http://en.wikipedia.org/wiki/Tornado_myths). Opening your windows or doors while a tornado approaches will equalize atmospheric pressure and help prevent property damage (http://en.wikipedia.org/wiki/Tornado_myths). Basically don't waste time opening opening any windows in your house. You could be doing soemthing better to prepare you for the worst. Windows can break very easily from flying objects.