FAQ: Difference between revisions

Cumulus uses a forecast based on the Zambretti Forecaster (see Google). I didn't design the algorithm myself and to be honest I don't know how it works, so I can't answer any questions about it. Note that this is a 'forecast' for the following 12 hours or so; it is not a 'nowcast' (what the weather is doing now). Please regard the forecast as 'for entertainment purposes only'. Do not base any decisions on it, and bear in mind that it is a very simple calculation based on only a few basic parameters. Some people get reasonable results, others do not. You can try tweaking the pressure extreme settings (in the Forecast section in the station settings), but don't expect the forecast to be as good as that provided by the weather agencies which have invested millions in their forecasting systems.