What if the forecast rain doesn’t eventuate?

The SWAN Systems model of your fields will be updated every time new information is received, this includes weather forecasts and observed rainfall at nearby weather stations. As the model steps through the days, forecasted rainfall amounts will be replaced with observed rainfall amounts, so if forecast rain does not fall, the model will reflect that and if the shortfall is significant then you may need to irrigate. SWAN can guide you in deciding how much to irrigate and when.