Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Friday 06 December, 00 UTC T+96 Valid: Tuesday 10 December, 00 UTC

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.

View all charts

Meteosat-10 mesoscale convective system, banner

Modelling convective precipitation – progress and challenges

Exciting improvements in modelling convective precipitation are being achieved through the collaboration of visiting scientist Tobias Becker, from the Max Planck Institute for Meteorology, with ECMWF’s Irina Sandu and Peter Bechtold.

12 November 2019

Graphic for stratospheric predictability workshop at ECMWF Nov 19

Scientists review impact of the stratosphere on weather

What impact does the stratosphere have on the weather below, and how can we harness our knowledge of that impact to improve weather forecasts? About 90 scientists came together at ECMWF from 18 to 21 November to review the state of the art.

27 November 2019

ECMWF at AGU 2019 image

ECMWF at the AGU Fall Meeting 2019

ECMWF is contributing to the American Geophysical Union (AGU) Fall Meeting in San Francisco, USA (9 to 13 December 2019) with presentations, exhibitions and posters. Find out where you can
meet us during the AGU week.

2 December 2019

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.

Warm conveyor belt graphic

Highlighted tweet

Registration is open for the workshop “Warm conveyor belts - a challenge to forecasting”. Join us in Reading from 10-12 March 2020 to help tackle the challenges of WCBs. Find out more: #WCBWS


Forecasts, analyses, climate re-analyses, reforecasts and multi-model data are available from our archive (MARS) or via dedicated data servers or via point-to-point dissemination.

Accessing forecasts

Researchers, WMO members, commercial users and satellite data providers can gain access to ECMWF forecast products under one of our various license agreement types.

Collaboration banner

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.