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There are (and probably always will be) some problems with NWP modelling including the IFS.   IFS output is constantly monitored for bias or inconsistency between forecast and observed values and a .  A list of inconsistencies is maintained and dynamically updated with a view to rectification of the problems.  Keep up-to-date with known IFS forecasting issues.  It should be noted that Note, those issues that have been marked as resolved (indicated by grey text in the link) will still be relevant when inspecting historical data.

This section gives pointers towards features which can have an impact on output and so .  These can help users to modify and improve forecasts for issue to customers.  The importance of critical assessment of output by human forecasters cannot be overstated.