“Doomsday Preppers” 9 tonight, National Geographic

It’s easy to dismiss “Doomsday Preppers,” which focuses on Americans convinced the end of the world is right around the corner, as yet another cable reality series that encourages viewers to laugh at lunatics.

And then Hurricane Sandy happened. Suddenly, the survivalist who keeps 1,500 cans of food in the basement doesn’t look so crazy.

“Preppers,” which returns tonight as the National Geographic Channel’s top-rated show, isn’t the only series with the apocalypse on its mind. “Revolution,” in which the lights go out on the entire planet, is NBC’s first new hit drama since 2006’s “Heroes.” Zombies threaten civilization in AMC’s “The Walking Dead,” the most popular drama on basic cable. One of fall’s most ambitious series is “Last Resort,” in which a submarine crew may trigger a nuclear war.

One could argue that those shows say more about our desire to see the little guy save the day than about our fear that the Mayan calendar might be as accurate as a Swiss watch.

But there’s no romanticizing the paranoia that hovers over “Preppers,” especially when it features the kind of people you wouldn’t mind having as neighbors. The season premiere introduces us to the Southwicks, a Utah family with six kids, friendly manners — and an impressive collection of haz-mat suits and gas masks.

Braxton Southwick, a Toyota mechanic, is convinced that terrorists will eventually release a smallpox virus in the U.S.

“People will be killing each other over a can of corn,” he says.

Southwick has set up an escape center in the nearby mountains and cajoles his family every couple of months to engage in exercises that consist of loading guns, gathering up pet chickens that they’ll use for eggs and making sure the trailer they’ll use to get to safe shelter has enough bottled water to quench an elephant herd.

Missouri teenager Jason Beacham has been preparing for anarchy since he was 8. He steals canned goods from the family groceries. He keeps a gas mask in his school locker. He makes his own weapons, including a “Macebat,” a baseball bat with long nails hammered into the wood. More eerily, he suggests to his mother that he might abandon her when the world goes haywire, because it’ll be easier for him to make it on his own.

“I’m not afraid to kill,” he says with dead eyes in a monotone.

This kid doesn’t need a survival plan; he needs a spanking.

Then there’s “Big Al,” a Nashville music producer who is convinced that the Russians are coming. He’s built a underground shelter in the woods where he plans to live on 1,000 gallons of water (“I am not going to drink my own urine), 10,000 pounds of wood and his misguided anger.

For now, the paranoia shared by Big Al and Jason mainly provides comic relief. At least until the next storm comes around.