Extra-Tropical Cyclones Automated Tracking North America (1000 hPa | 500 hPa | 1000+500 hPa) - Europe (1000 hPa | 500 hPa | 1000+500 hPa) 1000 and 500 hPa vorticity centres composite Last 7 days summary Short and medium-range forecasts:   GEM-GLB (7 days) GFS (7 days) UKMET (2 days) 00z 00z 00z 12z 12z 12z       Maps updated around 07z and 19z