This Envisat MERIS Reduced Resolution mode image was acquired 11 December 2005 at 10:45 GMT, and shows the smoke cloud from the Buncefield oil depot fire. The depot is located on the edge of Hemel Hempstead, above the cloud around the middle of the image crop seen here (about where the tendril of white cloud touches the black smoke) with the conurbation of London to the south. The full image has a width of 1284 km and a spatial resolution of 1200 metres.