ECMWF operational analysis and deterministic forecasts

The maps with potential vorticity and temperature presented on this site have been derived from the operational analysis and deterministic forecasts of ECMWF.

ECMWF ensemble prediction system, perturbed forecasts

The mosaic of potential vorticity maps presented on this site have been derived from a subset of the perturbed forecasts of the ensemble prediction system by ECMWF.