The Charleston radar is running again after the dual-pol upgrade.
Dual-polarization data isn’t flowing to most people yet — based on my experience with the upgrade at Sterling, VA earlier this year, a day or two of calibration is still needed before the products are turned on over the Level III data stream (which serves a majority of the radar apps out there, including GRLevel3 and RadarScope). Dual-pol moments are available over Level II, though I’ll wait to rely too heavily on them until NWS gives the data its public blessing.