National Severe Storms Laboratory straight line winds National Severe Storms Laboratory nearly half http://www.nssl.noaa.gov/education/svrwx101/wind/ straight line winds, National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory straight line winds straight line winds National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory National Severe Storms Laboratory straight line winds http://www.nssl.noaa.gov/education/svrwx101/wind/ National Severe Storms Laboratory http://www.nssl.noaa.gov/education/svrwx101/wind/ National Severe Storms Laboratory straight line winds straight line winds National Severe Storms Laboratory Strong winds National Severe Storms Laboratory straight line winds National Severe Storms Laboratory straight-line winds http://www.nssl.noaa.gov/education/svrwx101/wind/ cause more injuries, deaths and destruction annually Thunderstorm Winds National Severe Storms Laboratory storm damage straight line winds straight line winds straight-line winds National Severe Storms Laboratory