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Aggregate rainfall forecasts from the GFS, Arpege and Icon computer models.
The GFS charts are for 5 and 10 days ahead
The GFS is a global model run by National Centers for Environmental Prediction (NCEP) in the USA.
The Arpege and Icon charts are for 1, 2, 3, 4 days ahead
Arpege is a high resolution model run by Meteo France. Icon is run Deutscher Wetterdienst (DWD).
GFS updates 4 times each day using 00z, 06z, 12z and 18z data.
Arpege updates twice daily on TWO using 00z and 12z data.
Icon updates 4 times each day using 00z, 06z, 12z and 18z data.