The storm chasers mobilize as tornadoes form all over western Kansas.

The teams struggle to find the perfect storm in Nebraska.

Reed pushes his team closer to a twister than ever before.

Tornado season erupts early in OK, and Reed's new Dominator gets too close.

A huge wedge impacts in the Texas Panhandle, and the unbelievable happens.

Reed steps up his science game to take on Josh Wurman's research project.

Reed's new radar propels him from aggressive chaser to extreme scientist.

Reed, Sean and Tim face the strongest tornado conditions of the season.

Both Tim Samaras and the TIV team face off with a dangerous tornado. Reed pushes too close, and finds no place to hide.

In Wyoming, Sean Casey captures the shot of a lifetime.

On the last chase of the season in Nebraska, Reed and Tim chase multiple vortices. But when an EF-3 monster touches down right on top of Reed's armored research vehicle, Mother Nature shows who really dominates in Tornado Alley.

Armor offers little protection when the roof blows off the new Dominator.

The deadliest tornado of the season tears a 100-mile path across MS.

Reed pursues a TV weather reporter, and a longtime chaser calls it quits.

Tragedy strikes as Storm Chasers loses one of its own.

Sean's team struggles with a death, and Tim smokes out a monster.