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Tornado Outbreak Of April 13–15, 2019
A significant severe weather and tornado outbreak affected multiple regions of the Eastern United States in mid-April 2019. Over the course of 40 hours, 75 tornadoes touched down. The outbreak produced numerous strong tornadoes throughout portions of the Deep South, while additional significant tornadoes occurred as far north as Ohio, Pennsylvania, and Delaware. The most significant tornado of the event was a long-tracked, high-end EF3 tornado that struck Alto, Texas and killed two people. Numerous weak tornadoes were also confirmed, along with numerous reports of hail and damaging straight line winds. A total of nine people were killed during this outbreak of severe weather. Three fatalities occurred as a result of the tornadoes that struck Alto, Texas and Hamilton, Mississippi. In addition, six other non-tornadic fatalities were also associated with this storm event. On April 13, two children aged 3 and 8 were killed in Pollok, Texas after a tree fell on and crushe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tornadoes Of 2019
This page documents notable tornadoes and tornado outbreaks worldwide in 2019. Strong and destructive tornadoes form most frequently in the United States, Argentina, Brazil, Bangladesh, and Eastern India, but can occur almost anywhere under the right conditions. Tornadoes also develop occasionally in southern Canada during the Northern Hemisphere's summer and somewhat regularly at other times of the year across Europe, Asia, Argentina, and Australia. Tornadic events are often accompanied by other forms of severe weather, including strong thunderstorms, strong winds, and hail. There were 1,676 preliminary filtered reported tornadoes and 1,529 confirmed tornadoes in the United States in 2019. This made 2019 the fourth most active season on record, behind 2008, 2011, and 2004. Worldwide, 101 tornado-related deaths were confirmed; 42 in the United States, 28 in Nepal, 14 in China, eight in Cuba, two each in South Africa, Turkey, and Indonesia, and one each in Chile, Italy, and Japan. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tornado Outbreak
__NOTOC__ A tornado outbreak is the occurrence of multiple tornadoes spawned by the same synoptic scale weather system. The number of tornadoes required to qualify as an outbreak typically are at least six to ten, with at least two rotational locations (if squall line) or at least two supercells producing multiple tornadoes. The tornadoes usually occur within the same day or continue into the early morning hours of the succeeding day, and within the same region. Most definitions allow for a break in tornado activity (time elapsed from the end of the last tornado to the beginning of the next tornado) of six hours. If tornado activity indeed resumes after such a lull, many definitions consider the event to be a new outbreak. A series of continuous or nearly continuous tornado outbreak days is a tornado outbreak sequence. In the United States and Canada, tornado outbreaks usually occur from March through June in the Great Plains, the Midwestern United States, and the Southeastern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollok, Texas
Pollok is an unincorporated community in Angelina County, Texas, United States. According to the Handbook of Texas, the community had a population of 300 in 2000. It is located within the Lufkin, Texas micropolitan area. History The area around Pollok was first settled in the 1880s and was established as a sawmill center when Richard Blair built one on the railroad about six miles northwest of Clawson. The station was known as Bodan and was named after Frenchman Francis D. Bodan, who was the manager of a store on the old smuggler's road some north of Nacogdoches. A post office was established in 1886. There were two general stores and a successful sawmill in 1888. A lumber company called the J.A. Young Lumber Company built a mill larger than the original one and was sold to the Bodan Lumber Company in 1899 for $25,000. This company leased land from a man named Henry Claybon for 200 lbs. of salt pork and 4 barrels of flour to be paid annually while the mill was in operation or for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dallas–Fort Worth Metroplex
The Dallas–Fort Worth metroplex, officially designated Dallas–Fort Worth–Arlington by the U.S. Office of Management and Budget, is a conurbated metropolitan statistical area in the U.S. state of Texas encompassing 11 counties and anchored by the major cities of Dallas and Fort Worth. It is the economic and cultural hub of North Texas. Residents of the area also refer to it as DFW (airport code), or the Metroplex. The Dallas–Fort Worth–Arlington metropolitan statistical area's population was 7,637,387 according to the U.S. Census Bureau's 2020 census, making it the most populous metropolitan area in both Texas and the Southern United States, the fourth-largest in the U.S., and the tenth-largest in the Americas. In 2016, the Dallas–Fort Worth metroplex had the highest annual population growth in the United States. The metropolitan region's economy, also referred to as Silicon Prairie, is primarily based on banking, commerce, insurance, telecommunications, technolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trough (meteorology)
A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area. Since low pressure implies a low height on a pressure surface, troughs and ridges refer to features in an identical sense as those on a topographic map. Troughs may be at the surface, or aloft. Near-surface troughs sometimes mark a weather front associated with clouds, showers, and a wind direction shift. Upper-level troughs in the jet stream (as shown in diagram) reflect cyclonic filaments of vorticity. Their motion induces upper-level wind divergence, lifting and cooling the air ahead (downstream) of the trough and helping to produce cloudy and rain conditions there. Unlike fronts, there is not a universal symbol for a trough on a surface weather analysis chart. The weather charts in some countries or regions mark troughs by a line. In the United States, a trough may be marked as a dashed line or bold line. In the UK, Hong Kong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synoptic Scale Meteorology
The synoptic scale in meteorology (also known as large scale or cyclonic scale) is a horizontal length scale of the order of 1000 kilometers (about 620 miles) or more. This corresponds to a horizontal scale typical of mid-latitude depressions (e.g., extratropical cyclones). Most high- and low-pressure areas seen on weather maps (such as surface weather analyses) are synoptic-scale systems, driven by the location of Rossby waves in their respective hemisphere. Low-pressure areas and their related frontal zones occur on the leading edge of a trough within the Rossby wave pattern, while high-pressure areas form on the back edge of the trough. Most precipitation areas occur near frontal zones. The word ''synoptic'' is derived from the Greek word ('), meaning ''seen together''. The Navier–Stokes equations applied to atmospheric motion can be simplified by scale analysis in the synoptic scale. It can be shown that the main terms in horizontal equations are Coriolis force and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US Tornadoes And Tornado Warnings April 13–15, 2019 Animation
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Pale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squall Line
A squall line, or more accurately a quasi-linear convective system (QLCS), is a line of thunderstorms, often forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front (which often are accompanied by abrupt and gusty wind shifts). Linear thunderstorm structures often contain heavy precipitation, hail, frequent lightning, strong straight-line winds, and occasionally tornadoes or waterspouts. Particularly strong straight-line winds can occur where the linear structure forms into the shape of a bow echo. Tornadoes can occur along waves within a line echo wave pattern (LEWP), where mesoscale low-pressure areas are present. Some bow echoes can grow to become derechos as they move swiftly across a large area. On the back edge of the rainband associated with mature squall lines, a wake low can be present, on very rare occasions associated with a heat burst. Theory Polar front theory was developed by Jacob Bjerknes, derived from a dens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercell
A supercell is a thunderstorm characterized by the presence of a mesocyclone: a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms (supercell, squall line, multi-cell, and single-cell), supercells are the overall least common and have the potential to be the most severe. Supercells are often isolated from other thunderstorms, and can dominate the local weather up to away. They tend to last 2–4 hours. Supercells are often put into three classification types: classic (Normal precipitation level), low-precipitation (LP), and high-precipitation (HP). LP supercells are usually found in climates that are more arid, such as the high plains of the United States, and HP supercells are most often found in moist climates. Supercells can occur anywhere in the world under the right pre-existing weather conditions, but they are most common in the Great Plains of the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ark-La-Tex
The Ark-La-Tex (a portmanteau of Arkansas, Louisiana, and Texas; also stylized as Arklatex or ArkLaTex) is a socio-economic tri-state region where the Southern U.S. states of Arkansas, Louisiana, and Texas join together. The region contains portions of Northwest Louisiana, Northeast Texas, and South Arkansas as well as the extreme southeastern tip of Oklahoma, in McCurtain County (part of Choctaw Country), partly centered upon the Red River, which flows along the Texas–Oklahoma state line into Southwestern Arkansas and Northwest Louisiana. The population estimate of the 40-county core region as of 2018 is 1,498,647 people, up from 1,043,570 in 2010. Shreveport, Louisiana, with approximately 189,149 people in 2018, is the largest city, economic and geographic center of the region, and principal hub for both the Shreveport–Bossier City metropolitan area and Northwestern Louisiana. Longview, Texas, with an approximate population of 81,647 people in 2018, is the second-larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Prediction Center
The Storm Prediction Center (SPC) is a US government agency A government or state agency, sometimes an appointed commission, is a permanent or semi-permanent organization in the machinery of government that is responsible for the oversight and administration of specific functions, such as an administrati ... that is part of the National Centers for Environmental Prediction (NCEP), operating under the control of the National Weather Service (NWS), which in turn is part of the National Oceanic and Atmospheric Administration (NOAA) of the United States Department of Commerce (DoC). Headquartered at the National Weather Center in Norman, Oklahoma, Norman, Oklahoma, the Storm Prediction Center is tasked with forecasting the risk of severe thunderstorms and tornadoes in the contiguous United States. It issues #Convective outlooks, convective outlooks, #Mesoscale discussions, mesoscale discussions, and #Weather watches, watches as a part of this process. Convective outlooks are issu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stafford, Virginia
Stafford is a census-designated place (listed as Stafford Courthouse) in and the county seat of Stafford County in the northern part of the U.S. Commonwealth of Virginia. The population of Stafford County as of the 2010 United States Census was 128,984. It lies north of Fredericksburg, approximately south of Washington, D.C., and about north of Richmond, the state capital. Marine Corps Base Quantico is located north of the community. Stafford Courthouse is located at the intersections of U.S. Route 1 and Courthouse Road. History English sea captain Samuel Argall abducted Pocahontas near this area in April 1613 in an attempt to secure release of some English prisoners held by her father. Rebecca married English colonist John Rolfe in 1614. They sailed in 1616 to England where Pocahontas died in 1617. It was a stop on the Richmond, Fredericksburg and Potomac Railroad in the nineteenth Century; CSX Transportation is the RF&P's successor today. Accokeek Furnace Archeolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
