Visibility
Base Time: Sat 19 Sep 2026 18 UTC T+0 Valid time: Sat 19 Sep 2026 18 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.
| 23 September | Final Code for Earth Day |
| September 21 – 24 | CF Conventions Community Workshop 2026 |
| 24 September | AI Weather Quest: Annual Highlights and Awards |
| October 5 – 8 | Training course: Use and interpretation of ECMWF products |
| October 12 – 16 | Online training course: Introduction to ECMWF Data and Archive Services |
| 20 October | Informal Seminar: Jon Petch, Title TBC |
| October 19 – 23 | Training course: Predictability and ensemble forecast systems |
| October 26 – 30 | Joint CP-TT/DA-TT Workshop |
ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.