High resolution mean sea level pressure and ensemble spread
Base Time: Wed 30 Apr 2025 12 UTC T+96 Valid time: Sun 04 May 2025 12 UTC (T+96)
Ensemble forecasts explained
One 'ensemble forecast' consists of 51 separate forecasts made by the same computer model, all activated from the same starting time. The starting conditions for each member of the ensemble are slightly different, and physical parameter values used also differ slightly. The differences between these ensemble members tend to grow as the forecasts progress, that is as the forecast lead time increases.
Forecast charts and data
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Forecasts, analyses, climate reanalyses, re-forecasts and multi-model data are available from our archive (MARS) or via dedicated data servers or via point-to-point dissemination.
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