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Data and charts from a wide range of leading Numerical Weather Prediction (NWP) computer models is available. NWP takes current atmospheric and ocean data and uses mathematical models to produce weather predictions.
The best way to access the model charts and data is from the links below.
Many charts can be accessed using the original Chart viewer. However, due to the increasing number of models offered it is no longer feasible to make them all available.
Compare the Northern Hemisphere profile for the current date to the same date in all years going back to 1948. Updates daily.
Historic weather charts created using NCEP Reanalysis data. Available in 6 hour time steps.
Historic weather charts
Status issued 12:01 21/01/2022