Tonight the moon is the closest to the earth it has been in thousands of years. It won't be this close again till like the year 3213 or something. Its because the orbit of the moon is not a perfect circle. It will be 14% bigger than it was at its furthest away from the earth. Also since it is a full moon tonight for America it is said to be the brightest ever. Also because of the closeness.
The thing is, that it has been getting closer by little bits for many many years. The change from yesterday or last full moon even isn't perceptible to the human eye. Its a piece of trivia nothing more.