Shipping Forecast excluding the header line, has a limit of 350 words—except for the 0048 broadcast, where it is increased to 380 to accommodate Trafalgar's inclusion—and has a very strict format. It begins with "And now the Shipping Forecast, issued by the Met Office on behalf of the Maritime and Coastguard Agency at xxxx today." This format is followed quite strictly, although some continuity announcers read out the actual date of issue as opposed to the word "today". This is followed by gale warnings (winds of force 8 or more on the Beaufort scale), if any (e.g., "There are warnings of gales
Met Office part of its aviation forecast operation the Met Office operates the London Volcanic Ash Advisory Centre (VAAC). This provides forecasts to the aviation industry of volcanic ash clouds that could enter aircraft flight paths and impact aviation safety. The London VAAC, one of nine worldwide, is responsible for the area covering the British Isles, the north east Atlantic and Iceland. The VAAC were set up by the International Civil Aviation Organization (ICAO), an agency of the United Nations, as part of the International Airways Volcano Watch (IAVW). The London VAAC makes use of satellite images, plus seismic, radar and visual