Another theory on why Yellowstone might be more active with the sun overhead is that as we begin to go through the galactic crunch, and the planet Earth and other planets are somewhat squeezed, that the sun is also squeezed. And if the sun becomes denser because of being compacted by the gravity in the galactic plane we are about to go through, then it could cause the core of the sun to have more gravitational pull on other objects, including us, and our tides.

In fact, it could very well be, that the moon has increased its gravity as well, and this would explain the higher than usual tides last year.

Also, Yellowstone has been getting active during the beginning days of January. Well, January 4th is when the Earth is closer to the sun. Kind of interesting, no?