Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Saturday 24 February, 00 UTC T+96 Valid: Wednesday 28 February, 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.

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Earth surface processes, human impact and predictability

Gianpaolo Balsamo discusses the importance of two-way coupling between the atmosphere and Earth’s surface, and how humans are altering these interactions. He shares his drive and excitement about bringing recent research developments into operational use.

2 February 2018


Call for registration and abstracts: UEF user meeting in June 2018

ECMWF invites users of its forecasts and products to submit abstracts for the ‘Using ECMWF’s Forecasts’ meeting from 5 to 8 June 2018. The programme will include talks and keynote addresses to stimulate discussion and interactive sessions to encourage networking.

23 February 2018

Cracked earth

Hydrological services for business: registration now open

Applications are open for a workshop at ECMWF on 8 and 9 May 2018 exploring how businesses can benefit from hydrology forecasts. It is a unique opportunity for businesses to meet the Global Flood Awareness System (GloFAS) development team and influence the future shape of its hydrological services and forecasting products.

19 February 2018

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.

Evolution of tropical cyclone Kelvin

Plot of the week

ECMWF's simulated satellite infrared channel forecast shows tropical cyclone #Kelvin's unusual intensification and developing eye after it made landfall in Australia, 21 h and 33 h in advance.



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.

Advancing weather science

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.

ECMWF lecture theatre

ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.