Outer Westmark Knock Swell ForecastUnited KingdomEMLincolnshireOuter Westmark Knock1-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIOuter Westmark Knock swell forecast issued yesterday at 6:52 pm. Next forecast at approx. 6:52 pm. Wave Height Sea TemperatureGet WillyWeather+ to remove ads