Outlook models

Numerical Weather Prediction (NWP) is the basis of short and medium range weather forecasting. Powerful computers crunch large amounts of current weather data from around the globe and apply the laws of atmospheric physics to it to project the likely evolution. On TheWeatherOutlook we use the Global Forecast System (GFS), Global Ensemble Forecast System (GEFS) and European Centre for Medium-Range Weather Forecasts (ECWMF) when making forecasts, and more extensive data from these models as well Wave Watch 3 data and the UK Met Office fax charts can be viewed on the Computer model weather forecast charts page. Various other computer models are available, and on this page we provide external links to charts generated from the GEM, JMA, NOGAPS, and UK Met Office models.

Model / Hours ahead Current 12 24 36 48 60 72 84 96 108 120 144 168 192 216 240 264 288 300+
ECMWF             72   96   120 144 168 192 216 240      
GEM   12 24 36 48 60 72 84 96 108 120 144 168 192 216 240      
GFS   12 24 36 48 60 72 84 96 108 120 144 168 192 216 240 264 288 312 336 360 384
JMA     24   48   72   96   120 144 168 192          
Fax charts Current   24 36 48 60 72 84   120                  
UK Met Office                 96   120 144              
GFS Ensemble line graph London
Dublin
Liverpool
Aberdeen
                                   

Key

  • ECMWF - European Centre for Medium-Range Weather Forecasts
  • GFS - Global Forecast System
  • GEM - Canadian medium range forecast model
  • JMA - Japanese medium range forecast model
  • Fax charts - These are produced by the UK Met Office
  • UK Met Office - Data from the UK Met Office's own NWP model
  • GEFS Ensemble line graph - another way to view ensemble data from the GEFS