Fig. 1. Windguru
I'm always amazed at how much information can be put onto a screen; here, Windguru gives you in a glance the weather and especially the wind forecast in relation to windsurfing and kite boarding - strong winds are vital. It is just an aid to forecasting, though I have found it remarkably accurate, that wind strengths and directions do in reality shift pretty much according to the forecast. This greatly assists with planning a sailing trip - too strong or too weak and I keep away.