Advancing global NWP through international collaboration

Precipitation: Weekly mean anomalies

Base Time: Thu 15 Apr 2021 00 UTC T+264 Valid time: Mon 19 Apr 2021 00 UTC - Mon 26 Apr 2021 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.

View all charts
SCIENCE BLOG
NEWS
NEWS
IN FOCUS

Earth system diagram

Fact sheet: Earth system modelling at ECMWF

ECMWF’s Earth system model aims to represent interactions between as many Earth system components as required, at the necessary level of complexity and as initialised by data assimilation, to achieve the Centre’s forecasting goals.

8 March 2021

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.

UEF2021-montage

Highlighted tweet

Do you use ECMWF products and services? Come and share your experiences at our annual user meeting #UEF2021, taking place virtually 1-4 June. https://events.ecmwf.int/e/UEF2021

Datasets

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.