As tornado season comes to a close, Sean has one last chance to get the shot of all shots from inside a tornado, while Reed pushes his team to the edge, getting closer to a twister than ever before.

South Dakota spins up the twister of the season, and the non-stop tornado action leaves no room for drama.

Reed's new radar propels him from aggressive chaser to extreme scientist, inside an EF3.

Sean Casey's meteorologists finally put him in position for the shot of a lifetime, and this time it's a home run. Reed, Tim, and Josh all score big.

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. Watch on Prime Video

Sean's team struggles with the death of a teammate, and heightened emotions lead to questionable driving. Reed arms the Dominator with probe cannons, while Tim smokes out a South Dakota monster that just keeps growing.

Storm and chasers collide in Minnesota for a final showdown. As a ferocious EF-4 twister targets the town of Wadena, one team finds themselves in the wrong place at the right time, and Sean's trial by fire becomes a race to save others.

In the worst tornado outbreak in over half a century, Mississippi and Alabama are ravaged by hundreds of twisters. Towns are wiped clean off the map, and hundreds of people lose their lives.

After a week spent drifting around Kansas waiting for a calm spell to end, the crew is on the hunt. They chase a huge mesocyclone across a wilderness area completely devoid of paved roads, making the storm virtually impossible to intercept.

Five weeks into their storm chasing season, IMAX filmmaker Sean Casey and meteorologist Josh Wurman are under the gun to intercept a tornado. Conflict between Josh and Sean reach new heights, and Sean begins to trust his instincts over Josh's science.

TIV-1 makes a heroic return, but the tables turn as a monster EF-4 tornado chases the storm chasers through eastern Arkansas.

It's nearing the end of the tornado season, and although the team has collected record-breaking data, Sean has yet to get his one shot. While on their way to Woodward, Oklahoma, a tornado forms earlier than expected.

Reed and Josh's teams struggle to find the perfect storm in Nebraska. Reed's girlfriend Jene gets lost in a deadly hailstorm while the DOW team mistakenly drives into an on-coming tornado.

IMAX filmmaker Sean Casey and research meteorologist Josh Wurman head out to intercept one of nature's most deadly creations, tornadoes. Their team follows the first tornado of the season as it hits Tulia, Texas, and ultimately destroys the town.

Reed's cannons are locked and loaded, but multiple tornados prove a hard target for an itchy trigger finger. Tim's team chases in the tornado twilight zone, while Sean weathers a storm of controversy.

Sean and Reed face off at the New Mexico border. Monster tornados break up everything in their paths, except the tension.

Reed and Joel bury the hatchet to face a new tornado season, but armor offers little protection when the roof blows off the new Dominator. Sean mixes up his crew and unleashes tension in the path of a west Texas twister.

Sean finally gives the reigns to his meteorologist-navigator Matt Hughes, who leads the team to their best tornado intercept ever. Then triumph turns to tragedy as Storm Chasers loses one of its own.

The deadliest tornado of the season tears a hundred mile path across Mississippi, destroying 600 homes and the town of Yazoo City. For Reed, Joel and Chris, an epic chase turns into a race to save lives, and changes their own lives forever.

A tornado outbreak threatens to wreak havoc in Reed Timmer's backyard. Sean Casey's team follows their navigator's bold prediction, and tension threatens to derail Tim Samaras' chase on a huge day.

Tornado season erupts early in Oklahoma. Reed gets his new Dominator too close. Tim chases multiples, and Sean battles a rain-wrapped monster.

The DOW Team's in chaos as a broken radar sends Josh scrambling to fix it. Reed jumps on the opportunity to scoop the science team once again, while Danny and Aaron struggle to escape a ditch before a tornado gets too close.

Reed steps up his science to take on Dr. Josh Wurman's massive research project. Joel has second thoughts. The fallout reaches Sean, who makes a drastic decision.

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

Storm season starts out deadly, and Josh and Sean race to get a bigger, badder Tornado Intercept Vehicle, TIV-2, on the road. Meanwhile, a new force of nature emerges in Tornado Alley as Reed Timmer beats the pros to get incredible tornado intercepts.