High resolution mean sea level pressure and ensemble spread
Base Time: Sat 25 Oct 2025 00 UTC T+96 Valid time: Wed 29 Oct 2025 00 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
We provide current forecasts, climate reanalyses and specific datasets. These are available via the web, point-to-point dissemination, data servers and broadcasting.
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.
Researchers, WMO members, commercial users and satellite data providers can gain access to ECMWF forecast products under one of our various licence agreement types.
Serving meteorology
International collaboration is fundamental to the work of ECMWF, working with the EU and the meteorological community at large, including the World Meteorological Organization, space agencies, and scientists around the world.
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.
| October 27 – 31 | Training course: Machine learning for weather prediction |
| November 5 – 7 | Digital Twin Co-Design Hackathon |
| November 10 – 14 | Training course: A hands-on introduction to Numerical Weather Prediction Models: Understanding and Experimenting |
| December 3 – 4 | CAMEO project final General Assembly |
| 18 December | AI Weather Quest: SON Awards Webinar |
| April 13 – 17 | 5th ECMWF-ESA Machine Learning Workshop |
ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.