original: For official forecasts see the NHC's public advisory archive on Hurricane Karl.
simplifications: For official forecasts look at the NHC's public advisory archive on Hurricane Karl. For forecasts on Hurricane Karl, see the NHC's public advisory records. For official forecasts see the NHC's advisory on Hurricane Karl. The NHC's public advisory archive contains information on Hurricane Karl. For forecasts, go to the NHC's public advisory archive on Hurricane Karl. Forecasters see the NHC's public advisory archive on Hurricane Karl. You can find official forecasts for Hurricane Karl in the NHC's public advisory archive. For forecasts, see the NHC's  public advisory records on Hurricane Karl. The NHC's public advisory archive provides forecasts on Hurricane Karl. See the NHC Public Advisory Archive on Hurricane Karl for official forecasts.