Heralds Prong Number 3 Swell ForecastAustraliaQLDMackayHeralds Prong Number 31-Day3-Day5-Day Graph Plots Open in Graphs Swell Height and Direction Forecast NOAA WaveWatch III Swell Period Forecast NOAA WaveWatch IIIHeralds Prong Number 3 swell forecast issued today at 6:02 am. Next forecast at approx. 6:02 am. Wave Height Sea TemperatureGet WillyWeather+ to remove ads