the concept of chaos theory tells us that we wil never be able to accurately model the weather. Even with a sensor measuring everyting related to the weather 1m up, left and right, in a grid all around the world enough could go on within that framework to change everything. See Edward lorenz, sensitive dependence on initial conditons. Fluid dynamics. diffeq. Theres not enough computing power to do it. Maybe quantum computers that can have bits both 1 and 0 can solve this.