Some recent "weather" observations of our newfound neighbor have found that 15–25% of Luhman 16B's visible surface is covered in a massive, hurricane-force storm much like Jupiter's Great Red Spot. The "weather" was determined using VLT observations of the brightness and color over time, and the general size, temperature, and wind speed of the storm on Luhman 16B was measured.
Here's an animation of the ESO's Very Large Telescope observations, merged to create a global "weather map" of Luhman 16B's light and dark features. :)
You can read more about the observations on Luhman 16B here: