The ECMWF ensemble's 00Z and 12Z runs carry the 15-day charts; the 06Z and 18Z runs the 6-day ones. A chart not drawn for a station's list is greyed out.
This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF).
LAST 4 RUNS shows this chart for the run picked and the three before it: how the forecast has changed. The arrow keys step through runs.