Precipitation: Weekly mean anomalies
Base Time: Wed 26 Nov 2025 00 UTC T+288 Valid time: Mon 01 Dec 2025 00 UTC - Mon 08 Dec 2025 00 UTC
Weekly mean anomalies have been calculated relative to a 20-year model climatology. The areas where the ensemble forecast is not significantly different from the climatology, according to a WMW-test, are blanked.
Note that shaded areas are at 10%, contours are at 1% significant level.
For further details of Extended range output and products, please visit ECMWF Forecast User Guide.
Forecast charts and data
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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.
| 27 November | Informal Seminar: Forecasting the extremes: what AIFS and the DestinE physics-based km-scale global model can (and can’t) do |
| November 11 – 28 | Webinar Series: Machine Learning for operational forecasters |
| December 1 – 3 | Machine Learning pilot project all-hands meeting |
| December 1 – 3 | ECMWF's 50th anniversary events in Reading, UK |
| December 3 – 4 | CAMEO project final General Assembly |
| 18 December | AI Weather Quest: SON Awards Webinar |
| February 2 – 5 | Training course: Use and interpretation of ECMWF products |
| February 23 – 27 | Training course: Machine learning and Destination Earth |
ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.