Television's most electrifying programme returns with bigger storms and higher stakes for an incredible fourth season. The "Storm Chasers" teams are back on the scene recording data and gathering research in order to improve early warning systems. This series affords viewers a front row seat to nature's fury in the heart of "Tornado Alley" as scientists, researchers and weather enthusiasts, now armed to get closer than ever to America's deadly twisters, gear up and strap in for their pursuit of the ultimate tornado footage. We witness how the courageous "Storm Chasers" used science to save lives last spring, as one of the most violent storm seasons on record hit the US. Also extreme meteorologist Reed Timmer reunites with chasing partner Joel Taylor in their armoured chase vehicle "The Dominator" for this exciting 2010 season. They are joined by IMAX filmmaker Sean Casey and his monster tank-like TIV (Tornado Intercept Vehicle) and veteran researcher and "Storm Chaser" Tim Samaras.