High resolution mean sea level pressure and ensemble spread
Base Time: Sat 31 Aug 2024 12 UTC T+96 Valid time: Wed 04 Sep 2024 12 UTC (T+96)
Ensemble forecasts explained
One 'ensemble forecast' consists of 101 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. The black lines represent the mean of all the ensemble forecasts for a given time, while the shading indicates the spread. See the middle icon at the bottom right for the colour scale.
Forecast charts and data
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Serving meteorology
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Workshops and education
Education is a key element of our work at ECMWF, enabling our partners to get the most from ECMWF's services and develop an advanced understanding of forecasting.
3 September | ECMWF's UEF at EMS 2024: Side Event |
10 September | Webinar: EWC tenancy administration |
September 9 – 12 | Workshop on Diagnostics for Global Weather Prediction |
September 30 – October 3 | Training course: Use and interpretation of ECMWF products |
November 4 – 8 | Training course: Predictability and ensemble forecast systems |
November 11 – 15 | Training course: Numerical methods for weather prediction |
November 19 – 22 | NWP SAF Workshop on Satellite Observations of the Earth System Interfaces |
April 7 – 11 | Annual Seminar 2025 |
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ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.