Tonight, January 15th, the moon will reach its apogee. A lunar apogee refers to the moon being at the furthest point in it's orbit away from earth.
Not only will the moon be at it's furthest point but it will also be a full moon. When you combine the lunar apogee with a full moon you get a "Micro-Moon".
A "Micro-Moon" or "Mini-Moon" is basically the opposite of the super moon. The supermoon occurs when you combine the lunar perigee with a full moon. A lunar perigee is when the the moon is at the closest point to earth within orbit. Tonight's micro-moon will be close to 30,000 miles further away from earth than the supermoon set to occur on August 10th 2014.
For the full story check out: EarthSky.Org