In reality, the world experiences far more natural disasters than people are aware of. It's only because of the guardians of the Earth, Sky, and Ocean that ninety percent of them are mitigated. However, they are still human, and there are times when they fail to notice or simply don't feel like intervening.
For instance, the major earthquakes in the Dragon Nation— the one in Tangshan happened because the previous Earth Mother was at the end of her life, preoccupied with finding a successor, and couldn't attend to it.
The one in Sichuan occurred because Wang Yueryao had just received the inheritance and could not stop it.
As for the recent tornadoes in the United States, the Sky Guardian simply chose to let them happen as a lesson to certain individuals.
The power wasn't significant enough to warrant her intervention.
"You're so mean, Sister Sky. You vented your anger and left me to take the blame. Hehe!" the Ocean girl said, clearly not upset and even chuckling at the end.
