Ken Ring doesn't predict weather by the usual meteorological methods, he relies instead on the gravitational effect of the moon and the cycles he says it produces. Here's his explanation of why this works, and here's his Free Forecast page if you want to test him.
Now, if he wasn't already a member of the Skeptics Society (or is that former member), on the face of it I'd be referring him there immediately for investigation. It sounds like nonsense, but by all accounts (Ring's own, to be fair) he has has about an 85% success rate, with all the appropriate disclaimers, to be sure.
Does anyone have any Ring successs stories to report? Or is he just a nut?
Bill Keir, from both the Auckland Astronomical Society and the Skeptics Society, is in no doubt:
Obviously Ken Ring has a significant loyal following, and his weather forecasts are correct often enough to convince impressionable people. But why do the news media love this man so much?
I suggest several reasons. Ken Ring probably pesters them so much they can’t resist, and he is charming, affable and a master of bluff... Most media people have a poor understanding of the sciences.... The electronic media especially have an aversion to anything that taxes the brain for more than a few seconds. This is obvious from the way factual corrections are handled – they are either not published at all or hidden away where they will be missed. I wait in vain for a front-page headline reading, “Moon did not cause floods – yesterday’s headline wrong.”
...The fringe theorists won’t go away. We are dealing here with a growing trend. These people are exploiting modern information and publishing technology, and freedom-of-speech principles, to spread fabrication posing as fact. They go largely unchallenged. The Ken Rings of this world are purveyors of falsehood with the gullible collusion of the news media. The whole process increases public ignorance – the exact opposite of what the information explosion is thought to be doing.
But will Ken Ring and his followers listen to serious refutations? I fear not. Expert refutation will probably only reinforce their conviction that the establishment is suppressing their brilliant ideas. And that’s just the sort of juicy story angle some people fall for.