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Typhoon Sudal (2004)
Typhoon Sudal (), known in the Philippines as Super Typhoon Cosme, was the strongest tropical cyclone, typhoon to strike the island of Yap in the Federated States of Micronesia (FSM) in about 50 years. Yap is one of the four Administrative divisions of the Federated States of Micronesia, administrative divisions of the FSM. The entire island, only in length, experienced typhoon force winds, and 90% of the structures were damaged or destroyed. Damage was most severe in southeastern Yap, where the eye (cyclone), eyewall struck and winds exceeded , but the center of the typhoon passed south of the island. Typhoon Sudal originally formed on April 2, 2004, out of a persistent area of atmospheric convection, convection east of the FSM. It moved mostly westward for the first week of its duration, with brief northerly and southwesterly turns. Sudal attained tropical storm status on April 5, and it gradually intensified into a typhoon, which is a tropical cyclone with winds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federated States Of Micronesia
The Federated States of Micronesia (, abbreviated FSM), or simply Micronesia, is an island country in Micronesia, a region of Oceania. The federation encompasses the majority of the Caroline Islands (excluding Palau) and consists of four Administrative divisions of the Federated States of Micronesia#States, states—from west to east: Yap State, Yap, Chuuk State, Chuuk, Pohnpei State, Pohnpei, and Kosrae—that span the western Pacific just north of the equator for a Longitude, longitudinal distance of almost . Together, the states comprise around 607 islands and a combined land area of approximately . The entire island nation lies across the northern Pacific accordingly: northeast of Indonesia and Papua New Guinea, south of Guam and the Marianas, west of Nauru and the Marshall Islands, east of Palau and the Philippines, about north of eastern Australia, southeast of Japan, and some southwest of Honolulu of the Hawaiian Islands. The country's total land area is relatively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Circulation
Atmospheric circulation is the large-scale movement of Atmosphere of Earth, air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but the large-scale structure of its circulation remains fairly constant. The smaller-scale weather systems – middle latitudes, mid-latitude low-pressure area, depressions, or tropical convective cells – occur chaotically, and long-range weather predictions of those cannot be made beyond ten days in practice, or a month in theory (see chaos theory and the butterfly effect). The Earth's weather is a consequence of its illumination by the Sun and the laws of thermodynamics. The atmospheric circulation can be viewed as a heat engine driven by the Sun's energy and whose heat sink, energy sink, ultimately, is the blackness of space. The work produced by that engine causes the motion of the masses of air, and in that process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleutian Islands
The Aleutian Islands ( ; ; , "land of the Aleuts"; possibly from the Chukchi language, Chukchi ''aliat'', or "island")—also called the Aleut Islands, Aleutic Islands, or, before Alaska Purchase, 1867, the Catherine Archipelago—are a chain of 14 main, larger volcanic islands and 55 smaller ones. Most of the Aleutian Islands belong to the U.S. state of Alaska, with the archipelago encompassing the Aleutians West Census Area, Alaska, Aleutians West Census Area and the Aleutians East Borough, Alaska, Aleutians East Borough. The Commander Islands, located further to the west, belong to the Russian Federal subjects of Russia, federal subject of Kamchatka Krai, of the Russian Far East. The islands form part of the Aleutian Arc of the Northern Pacific Ocean, and occupy a land area of 6,821 sq mi (17,666 km2) that extends westward roughly from the Alaska Peninsula, Alaskan Peninsula mainland, in the direction of the Kamchatka Peninsula; the archipelago acts as a border between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sudal Yap
Sudal () is a village and Village Development Committee in Bhaktapur District in the Bagmati Zone of central Nepal. At the time of the 1991 Nepal census The 1991 Nepal census was a widespread national census conducted by the Nepal Central Bureau of Statistics. Working with Nepal's Village Development Committees at a district level, they recorded data from all the main towns and villages of each ... it had a population of 6,074 with 1,081 houses in it. References Populated places in Bhaktapur District {{Bhaktapur-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Atmospheric, Geophysical And Astronomical Services Administration
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (, abbreviated as PAGASA , which means "hope" as in the Tagalog word ''pag-asa'') is the National Meteorological and Hydrological Services (NMHS) agency of the Philippines mandated to provide protection against natural calamities and to ensure the safety, well-being and economic security of all the people, and for the promotion of national progress by undertaking scientific and technological services in meteorology, hydrology, climatology, astronomy and other geophysical sciences. Created on December 8, 1972, by reorganizing the Weather Bureau, PAGASA now serves as one of the Scientific and Technological Services Institutes of the Department of Science and Technology. History The ''Observatorio Meteorológico de Manila'' Formal meteorological and astronomical services in the Philippines began in 1865 with the establishment of the ''Observatorio Meteorológico de Manila'' (Manila Meteorologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barometric Pressure
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1,013.25 millibars, 760 mm Hg, 29.9212 inchesHg, or 14.696 psi.International Civil Aviation Organization. ''Manual of the ICAO Standard Atmosphere'', Doc 7488-CD, Third Edition, 1993. . The atm unit is roughly equivalent to the mean sea-level atmospheric pressure on Earth; that is, the Earth's atmospheric pressure at sea level is approximately 1 atm. In most circumstances, atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. As elevation increases, there is less overlying atmospheric mass, so atmospheric pressure decreases with increasing elevation. Because the atmosphere is thin relative to the Earth's radius—especially the dense atmospheric layer at low altitudes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super Typhoon
Since 1947, the Joint Typhoon Warning Center (JTWC) has classified all typhoons in the Tropical cyclone basins#Northwestern Pacific Ocean, Northwestern Pacific Ocean with wind speeds of at least —the equivalent of a strong Category 4 on the Saffir–Simpson scale, as ''super typhoons''. Since that year, 316 super typhoons have occurred in the basin, the latest being Typhoon Man-yi (2024), Typhoon Man-yi in 2024 Pacific typhoon season, 2024. Only two List of Pacific typhoon seasons, Pacific typhoon seasons have not included at least one super typhoon, which were the 1949 Pacific typhoon season, 1949 and the 1974 Pacific typhoon season, 1974 seasons. The most typhoons to have reached this intensity in a single season is tied between 1965 Pacific typhoon season, 1965 and 1997 Pacific typhoon season, 1997, with 11 becoming super typhoons. Background All typhoons that reach an intensity of at least are referred to by the Joint Typhoon Warning Center as ''super typhoons.'' The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyewall Replacement Cycle
In meteorology, eyewall replacement cycles, also called concentric eyewall cycles, naturally occur in intense tropical cyclones with maximum sustained winds greater than , or hurricane-force, and particularly in major hurricanes of Saffir–Simpson scale, Saffir–Simpson category 3 to 5. In such storms, some of the outer rainbands may strengthen and organize into a ring of thunderstorms—a new, outer Eye (cyclone), eyewall—that slowly moves inward and robs the original, inner eyewall of its needed moisture and angular momentum. Since the strongest winds are in a tropical cyclone's Eye (cyclone), eyewall, the storm usually weakens during this phase, as the inner wall is "choked" by the outer wall. Eventually the outer eyewall replaces the inner one completely, and the storm may re-intensify. The discovery of this process was partially responsible for the end of the U.S. government's hurricane modification experiment Project Stormfury. This project set out to cloud seeding, seed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communication, navigation, scientific research, and commerce. UTC has been widely embraced by most countries and is the effective successor to Greenwich Mean Time (GMT) in everyday usage and common applications. In specialised domains such as scientific research, navigation, and timekeeping, other standards such as Universal Time, UT1 and International Atomic Time (TAI) are also used alongside UTC. UTC is based on TAI (International Atomic Time, abbreviated from its French name, ''temps atomique international''), which is a weighted average of hundreds of atomic clocks worldwide. UTC is within about one second of mean solar time at 0° longitude, the currently used prime meridian, and is not adjusted for daylight saving time. The coordination of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridge (meteorology)
In meteorology a ridge or barometric ridge is an elongated area of relatively high atmospheric pressure compared to the surrounding environment, without being a closed circulation. It is associated with an area of maximum anticyclonic curvature of wind flow. The ridge originates in the center of an anticyclone and sandwiched between two low-pressure areas, and the locus of the maximum curvature is called the ''ridge line''. This phenomenon is the opposite of a trough. Description Ridges can be represented in two ways: * On surface weather maps, the pressure isobars form contours where the maximum pressure is found along the axis of the ridge. * In upper-air maps, geopotential height isohypses form similar contours where the maximum defines the ridge. Related weather Given the direction of the winds around an anticyclonic circulation and the fact that weather systems move from west to east: *ahead of an upper-ridge, the airflow that comes from the polar regions and bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poluwat
Poluwat, also Polowat, formerly Puluwat, is a coral atoll and a municipality of Chuuk state, Federated States of Micronesia. Name The name of the island goes back to Proto-Chuukic ''*pʷolowado''. Geography Polowat is located in the northwestern region ( Oksoritod), and there in the western area ( Pattiw) of Chuuk state. The location is . The atoll has five islets (including itself) lying on the rim of the reef, with an aggregate land area of 3.4 km2, listed counterclockwise starting at Polowat in the southeast: #Polowat (east) #Alengelap (north rim) #To (north rim) #Alei (west) #Haw (south) Since Polowat Atoll has only a small lagoon, in comparison with most Micronesian atolls, the total size is only 7 km2. Alei in the west and Polowat in the east, the two largest islands of the atoll, have breadfruit trees at the middle and coconut palms along the shores. Along the northern rim of the reef, between Polowat and Alei, are Alengelap Islet and To Islet. The southern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
