Beaufort scale cyclone), and force 12 a hurricane-force wind warning (or hurricane warning if related to a tropical cyclone). A set of red warning flags (daylight) and red warning lights (night time) is displayed at shore establishments which coincide with the various levels of warning. In Canada, maritime winds forecast to be in the range of 6 to 7 are designated as "strong"; 8 to 9 "gale force"; 10 to 11 "storm force"; 12 "hurricane force". Appropriate wind warnings are issued by Environment Canada's Meteorological Service of Canada: strong wind warning, gale (force wind) warning, storm (force wind) warning and hurricane-force wind
Great Storm of 1854 was commanded to set up a storm warning system; this later developed into an international meteorological service. Though it is impossible to precisely calculate the strength or speed of the wind, estimates have placed it around force 11 on the Beaufort Scale. Great Storm of 1854 The Great Storm of 1854 (also known as the Balaklava Storm) occurred in and around the Black Sea on 14 November 1854. It caused severe damage and caused major disruption to armed forces (and especially naval forces) in the region engaged in the Crimean War. At the time of the storm, the British and