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Cyclone Meena (1989)
Severe Tropical Cyclone Meena was the first of four tropical cyclones to impact the Cook Islands during February 2005. The system was first identified within a trough of low pressure, about to the northwest of Pago Pago in American Samoa. Meteorological history During February 1, an area of low pressure was identified within a trough of low pressure, about to the northwest of Pago Pago in American Samoa. During that day, the system moved south-westwards and started to consolidate, before the Fiji Meteorological Service (FMS) classified the system as Tropical Depression 07F. At this stage, the depression was poorly organised with atmospheric convection displaced to the north of the systems low level circulation center, while it was located to the south of a ridge of high pressure in an area of moderate vertical wind shear. Over the next day, the system's organisation significantly improved with the development of a small central dense overcast, while its outflow was enhanced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Samoa
American Samoa ( sm, Amerika Sāmoa, ; also ' or ') is an unincorporated territory of the United States located in the South Pacific Ocean, southeast of the island country of Samoa. Its location is centered on . It is east of the International Date Line, while Samoa is west of the Line. The total land area is , slightly more than Washington, D.C. American Samoa is the southernmost territory of the United States and one of two U.S. territories south of the Equator, along with the uninhabited Jarvis Island. Tuna products are the main exports, and the main trading partner is the rest of the United States. American Samoa consists of five main islands and two coral atolls. The largest and most populous island is Tutuila, with the Manuʻa Islands, Rose Atoll and Swains Island also included in the territory. All islands except for Swains Island are part of the Samoan Islands, west of the Cook Islands, north of Tonga, and some south of Tokelau. To the west are the islands of the Wall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Cook Islands
The Northern Cook Islands is one of the two chains of atolls which make up the Cook Islands. Lying in a horizontal band between 9° and 13°30' south of the Equator, the chain consists of the atolls of Manihiki, Nassau, Penrhyn, Pukapuka, Rakahanga and Suwarrow, along with the submerged Tema Reef. Geography The chain forms a roughly inverted triangular shape, stretching from Penrhyn in the northeast to Pukapuka in the northwest and to Suwarrow in the south. The Northern Cook Islands are separated from the Southern Cook Islands by a wide stretch of the Pacific Ocean, with the nearest part of the Southern chain being Palmerston Island, due south of Suwarrow. With an area of just 21 sq. km. and a population of 1,041 (according to the 2016 census), the islands only account for some 6% of the Cooks' population and 9% of the land area. Almost all of this population is on the three islands of Pukapuka, Manihiki, and Penrhyn. The two chains are also geographically different: although ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Cyclones In American Samoa
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). In terms of climate, the tropics receive sunlight that is more direct than the rest of Earth and are generally hotter and wetter as they aren't affected as much by the solar seasons. The word "tropical" sometimes refers to this sort of climate in the zone rather than to the geographical zone itself. The tropical zone includes deserts and snow-capped mountains, which are not tropical in the climatic sense. The tropics are distinguished from the other climatic and biomatic regions of Earth, which are the middle latitudes and the polar regions on either side of the equatorial zone. The tropics constitute 40% of Earth's surface area and contain 36% of Earth's landmass. , the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Cyclones In The Cook Islands
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). In terms of climate, the tropics receive sunlight that is more direct than the rest of Earth and are generally hotter and wetter as they aren't affected as much by the solar seasons. The word "tropical" sometimes refers to this sort of climate in the zone rather than to the geographical zone itself. The tropical zone includes deserts and snow-capped mountains, which are not tropical in the climatic sense. The tropics are distinguished from the other climatic and biomatic regions of Earth, which are the middle latitudes and the polar regions on either side of the equatorial zone. The tropics constitute 40% of Earth's surface area and contain 36% of Earth's landmass. , the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 5 South Pacific Cyclones
Category, plural categories, may refer to: Philosophy and general uses *Categorization, categories in cognitive science, information science and generally *Category of being * ''Categories'' (Aristotle) *Category (Kant) *Categories (Peirce) *Category (Vaisheshika) *Stoic categories *Category mistake Mathematics * Category (mathematics), a structure consisting of objects and arrows * Category (topology) In mathematics, a topological space X is said to be a Baire space if countable unions of closed sets with empty interior also have empty interior. According to the Baire category theorem, compact Hausdorff spaces and complete metric spaces are ex ..., in the context of Baire spaces * Lusternik–Schnirelmann category, sometimes called ''LS-category'' or simply ''category'' * Categorical data, in statistics Linguistics *Lexical category, a part of speech such as ''noun'', ''preposition'', etc. *Syntactic category, a similar concept which can also include phrasal categories * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclone Martin
The name Martin has been used for four tropical cyclones worldwide: For one storm in the Atlantic Ocean, two in the South Pacific Ocean and for one extratropical European windstorm. In the Atlantic: * Hurricane Martin (2022) – large but short-lived Category 1 hurricane that churned in the open North Atlantic. In the South Pacific: * Cyclone Martin (1986) – weak tropical cyclone had only minor effects on land. * Cyclone Martin (1997) – damaging and deadly Category 3 tropical cyclone that affected the Cook Islands and French Polynesia. The WMO retired the name ''Martin'' from use in the South Pacific basin following the 1997–98 cyclone season. In Europe: * Cyclone Martin (1999) – caused devastating damage in southern France in late December 1999, killing 30 people. See also * List of storms named Marty The name Marty has been used for eight tropical cyclones, seven in the Eastern Pacific Ocean and one in the Western Pacific Ocean. In the Eastern Pacific: * Hurricane Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclone Val
Severe Tropical Cyclone Val was considered to be the worst tropical cyclone to affect the Samoan Islands since the 1889 Apia cyclone. The system that was to become Severe Tropical Cyclone Val was first identified during the opening days of December 1991, as a small circulation, within the Intertropical Convergence Zone to the north of Tokelau. Over the next few days, the system moved westwards towards Rotuma and Tuvalu and gradually developed further, before it was named Val during December 5, after it had become a category 1 tropical cyclone on the Australian tropical cyclone intensity scale. The system subsequently continued to intensify as it moved towards the Samoan Islands and peaked as a category 4 severe tropical cyclone, as it made landfall on the island of Savaii during December 6. After Val had passed over the island, weakening upper-level winds caused the system to slow down before it made a sharp clockwise loop which almost brought it over Savaii for a second time. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Cook Islands
The Cook Islands can be divided into two groups: the Southern Cook Islands and the Northern Cook Islands. The country is located in Oceania, in the South Pacific Ocean, about one-half of the way from Hawaii to New Zealand. From March to December, the Cook Islands are in the path of tropical cyclones, the most notable of which were the cyclones Martin and Percy. Two terrestrial ecoregions lie within the islands' territory: the Central Polynesian tropical moist forests and the Cook Islands tropical moist forests. Islands and reefs Southern Cook Islands *Aitutaki *Atiu *Mangaia * Manuae *Mauke *Mitiaro *Palmerston Island *Rarotonga (capital) *Takutea Northern Cook Islands *Manihiki *Nassau *Penrhyn atoll *Pukapuka *Rakahanga *Suwarrow Table Note: The table is ordered from north to south. Population figures from the 2016 census. Statistics ; Area: :* Total: :* Land: 236 km2 :* Water: 0 km2 ; Area - comparative: : 1.3 times the size of Washington, DC ; Coastli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Dense Overcast
The central dense overcast, or CDO, of a tropical cyclone or strong subtropical cyclone is the large central area of thunderstorms surrounding its circulation center, caused by the formation of its eyewall. It can be round, angular, oval, or irregular in shape. This feature shows up in tropical cyclones of tropical storm or hurricane strength. How far the center is embedded within the CDO, and the temperature difference between the cloud tops within the CDO and the cyclone's eye, can help determine a tropical cyclone's intensity with the Dvorak technique. Locating the center within the CDO can be a problem with strong tropical storms and minimal hurricanes as its location can be obscured by the CDO's high cloud canopy. This center location problem can be resolved through the use of microwave satellite imagery. After a cyclone strengthens to around hurricane intensity, an eye appears at the center of the CDO, defining its center of low pressure and its cyclonic wind field. Tropic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook Islands
) , image_map = Cook Islands on the globe (small islands magnified) (Polynesia centered).svg , capital = Avarua , coordinates = , largest_city = Avarua , official_languages = , languages_type = Spoken languages , languages = , ethnic_groups = , ethnic_groups_year = 2016 census , demonym = Cook Islander , government_type = , leader_title1 = Monarch , leader_name1 = , leader_title2 = 's Representative , leader_name2 = Sir Tom Marsters , leader_title3 = Prime Minister , leader_name3 = Mark Brown , leader_title4 = President of the House of Ariki , leader_name4 = Tou Travel Ariki , legislature = Parliament , sovereignty_type = Associated state of New Zealand , established_event1 = Self-governance , established_date1 = 4 August 1965 , establi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Wind Shear
Wind shear (or windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal wind shear. Vertical wind shear is a change in wind speed or direction with a change in altitude. Horizontal wind shear is a change in wind speed with a change in lateral position for a given altitude. Wind shear is a microscale meteorological phenomenon occurring over a very small distance, but it can be associated with mesoscale or synoptic scale weather features such as squall lines and cold fronts. It is commonly observed near microbursts and downbursts caused by thunderstorms, fronts, areas of locally higher low-level winds referred to as low-level jets, near mountains, radiation inversions that occur due to clear skies and calm winds, buildings, wind turbines, and sailboats. Wind shear has significant effects on the control of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridge
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The lines along the crest formed by the highest points, with the terrain dropping down on either side, are called the ridgelines. Ridges are usually termed hills or mountains as well, depending on size. Smaller ridges, especially those leaving a larger ridge, are often referred to as spurs. Types There are several main types of ridges: ;Dendritic ridge: In typical dissected plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more erosion resistant rock, but not always – they often remain because there were more joints where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
