  We present next-to-leading order (NLO) QCD predictions to $W^+W^-$ production
in association with up to three jets at hadron colliders. We include
contributions from couplings of the $W$ bosons to light quarks as well as
trilinear vector couplings. These processes are used in vector-boson coupling
measurements, are background to Higgs signals and are needed to constrain many
new physics scenarios. For the first time NLO QCD predictions are shown for
electroweak di-vector boson production with three jets at a hadron collider. We
show total and differential cross sections for the LHC with proton
center-of-mass energies of 8 and 13 TeV. To perform the calculation we employ
on-shell and unitarity methods implemented in the BlackHat library along with
the SHERPA package. We have produced event files that can be accessed for
future dedicated studies.
