You know that someone, somewhere is taking bets on how long it's going to rain.....the total rainfall in inches when it's all said and done, etc....
That, and if there are any slots with weather or storm themes, do you think the payouts will be of a greater frequency?
Gambling can be a sick and twisted past-time, can't it? Betting on how bad it gets in an area that has already gotten as much rain as the location you are in gets in 1 whole year.