Visibility
Base Time: Mon 27 Apr 2026 00 UTC T+0 Valid time: Mon 27 Apr 2026 00 UTC
Predicting near surface visibility is dependent on predicting the correct dynamic and thermodynamic conditions in the boundary layer which can be highly variable. Fog is an extremely important weather hazard, but particularly difficult to predict.
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.
Forecasts, analyses, climate reanalyses, re-forecasts and multi-model data are available from our archive (MARS) or via dedicated data servers or via point-to-point dissemination.
Researchers, WMO members, commercial users and satellite data providers can gain access to ECMWF forecast products under one of our various licence agreement types.
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.
| 29 April | Webinar: EWC IAM and Intro to OpenStack Horizon |
| February 23 – April 30 | C3S Mini MOOC - Understanding Climate Data |
| 5 May | Code for Earth - Alumni Network - EGU drinks |
| June 1 – 4 | Using ECMWF's Forecasts (UEF2026) |
| June 3 – 5 | 9th C3S General Assembly |
| 9 June | Networking Session |
| June 8 – 9 | DestinE Co-Design Workshop |
| June 9 – 10 | 5th Destination Earth User eXchange |
ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.