Advancing global NWP through international collaboration

High resolution mean sea level pressure and ensemble spread

Friday 16 November, 12 UTC T+96 Valid: Tuesday 20 November, 12 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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Complex mountains and their effects on atmospheric flow

Irina Sandu from ECMWF and Annelize van Niekerk from the UK Met Office discuss their recent work in which kilometre-scale simulations are used to investigate the impact of complex orography on the atmosphere.

5 November 2018

Major upgrade for Global Flood Awareness System

The Global Flood Awareness System (GloFAS), for which ECMWF is the computational centre, was upgraded on 14 November to provide improved river flood forecasts across the world. The upgrade is the first after GloFAS became an operational service earlier this year.

14 November 2018

Global grid

ECMWF and the Group on Earth Observations (GEO)

ECMWF is one of 127 participating organisations which, together with 105 member nations and the European Union, form the Group on Earth Observations (GEO). Here we look at GEO’s important work and how ECMWF both benefits and contributes.

16 November 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.

Plot of the week 16 Nov 18

Plot of the week

Accumulated precipitation in western Germany from 15 June to 10 November was roughly half the normal value. ECMWF’s 24-hour forecast and 6-day forecast were close to observations, while the 15-day forecast did not do much better than climatology. @imprex_eu #Dürre


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.

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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.