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Extratropical CyclonesExtratropical cyclones, sometimes called mid-latitude cyclones, are a group of cyclones defined as synoptic scale low pressure weather systems that occur in the middle latitudes of the Earth having neither tropical nor polar characteristics. A powerful storm system slammed into Santa Catarina, southern Brazil, on May 4 2008, leaving more than 1,600 people homeless, blocking major roads, and forcing 8 out of the 33 municipalities affected by the cyclone to declare a state of emergency. Neighboring Rio Grande do Sul was also affected by the cyclone, with three fatalities attributed to the cyclone and 25,000 people forced to evacuate the area.
A major storm system, otherwise known as a Nor'easter, moved up the American Eastern Seaboard during the 15th-17th of April 2007. Strong winds produced power outages that affected hundreds of thousands from South Carolina to Maine, while heavy rainfall generated flooding in areas of the Mid-Atlantic and Northeast. New York City had the second-rainiest day ever, with 192 mm (7.57) inches on the 15th April. The record for the heaviest daily rainfall is 210 mm (8.28 inches) set on September 23, 1882 (NWS). Higher elevations of northern New York, Vermont and New Hampshire received snowfall accumulations as high as 43 cm (17 inches). A total of 17 deaths were attributed to the storm. A storm system brought strong winds to southern California, fanning brush fires and producing power outages. At least 76,000 power outages were reported in the greater Los Angeles area on the 12th April.
The remnants of
Isobel merged with a non-tropical low-pressure system to create a very large and uncharacteriscally powerful extratropical cyclone sytem across Western Australia on the 4th January 2007. The storm's evolution drew parallels with the "Perfect Storm" in the North Atlantic Ocean during October 1991. Very heavy rain was reported in southern sections of Western Australia, with 135 mm (5.3 inches) at Esperance along with winds gusting to 72 km/hr (45 mph).
A powerful storm system affected much of northern Europe during the 17th-18th. Torrential rains and winds gusting up to 170 km/hr (105 mph) affected portions of southern Britain, northern France, the Netherlands, Germany, and the Czech Republic. The UK Met Office reported the strongest winds since January 1990 across the country. There were at least 47 deaths across the region, with tens of thousands losing electrical services during the storm.
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