|
Tornado Outbreak Of January 10–11, 2020
The tornado outbreak of January 10–11, 2020 was a two-day severe weather event stretching from the South-Central Plains eastward into the Southeast United States. An eastward-moving shortwave trough tracked across the continental United States through that two-day period, combining with abundant moisture, instability, and wind shear to promote the formation of a long-lived squall line. Hundreds of damaging wind reports were received, and 80 tornadoes occurred within this line, making it the third largest January tornado outbreak on record. Three tornadoes—an EF1 in eastern Texas, an EF2 in northern Louisiana, and an EF2 in western Alabama—led to a total of seven deaths, all in mobile homes. There were five other storm related deaths, including two due to icy roads in Lubbock, Texas, one due to drowning in Oklahoma, and one due to icy roads in Iowa. The system also brought a monthly record high temperature to Boston and Bridgeport. Extensive damage and several other injur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Central United States
The South Central United States or South Central states is a region in the south central portion of the Southern United States. It evolved out of the Old Southwest, which originally was the western portion of the South. The states of Arkansas, Louisiana, Oklahoma, and Texas (which make up what the Census Bureau Division calls West South Central States) are almost always considered the "core" of the region. As part of the East South Central States sub-group of the Census Bureau classification, Alabama, Mississippi, Tennessee and Kentucky are also frequently listed under the heading. At the highest extent, Kansas, and Missouri, may be included by some sources. If defined as only its four core states, the region lies almost exclusively in the Central Time Zone (with El Paso being the only major city to observe Mountain Time). At different times, all of the above states were considered part of the Western United States in American history. History The history of the South Centr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tornado Outbreak Of January 29–30, 2013
A significant early season tornadic event affected portions of the Midwestern and Southern United States at the end of January 2013. The first signs of the outbreak came on January 23 as the Storm Prediction Center (SPC) detailed the eastward progression of a shortwave trough into an increasingly unstable air mass across portions of the lower Mississippi Valley; however, considerable uncertainty in the placement of severe thunderstorms caused the SPC to remove their threat outline. Succeeding many changes in the forecast, a Day 1 Moderate risk was issued for January 29, warning of the potential for widespread/significant damaging winds and a few strong tornadoes. The threat shifted eastward on January 30, encompassing a large section of the Southeastern United States. By late that day, the shortwave trough tracked northeastward into New England, ending the severe weather threat. Between January 29–30, a total of 66 tornadoes were confirmed, making the event t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enhanced Fujita Scale
The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States, Canada, China, and Mongolia. The Enhanced Fujita scale replaced the decommissioned Fujita scale that was introduced in 1971 by Ted Fujita. Operational use began in the United States on February 1, 2007, followed by Canada on April 1, 2013. It has also been proposed for use in France. The scale has the same basic design as the original Fujita scale—six intensity categories from zero to five, representing increasing degrees of damage. It was revised to reflect better examinations of tornado damage surveys, in order to align wind speeds more closely with associated storm damage. Better standardizing and elucidating what was previously subjective and ambiguous, it also adds more types of structures and vegetation, expands degrees of damage, and better accounts for variables such as differences in con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Time Zone
A time zone is an area which observes a uniform standard time for legal, Commerce, commercial and social purposes. Time zones tend to follow the boundaries between Country, countries and their Administrative division, subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time. All time zones are defined as offsets from Coordinated Universal Time (UTC), ranging from UTC−12:00 to UTC+14:00. The UTC offset, offsets are usually a whole number of hours, but a few zones are offset by an additional 30 or 45 minutes, such as in Indian Standard Time, India, Time in Australia, South Australia and Nepal Time, Nepal. Some areas of higher latitude use daylight saving time for about half of the year, typically by adding one hour to local time during spring (season), spring and summer. List of UTC offsets In the table below, the locations that use daylight saving time (DST) are listed in their UTC offse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrollton, Alabama
Carrollton is a city in and the county seat of Pickens County, Alabama, United States. At the 2010 census the population was 1,019, up from 987 in 2000. The Pickens County Courthouse in the center of Carrollton was erected in 1877. The first courthouse in Carrollton was burned on April 5, 1865 by troops of Union General John T. Croxton. A second courthouse was destroyed by a fire on November 16, 1876. History Incorporated in 1831, the town was named after Charles Carroll of Carrollton, Maryland, the only Roman Catholic and longest-living signer of the Declaration of Independence. A post office has been in operation at Carrollton since 1831. As was typical, the county jail was located at the courthouse. The courthouse square was used frequently as a site for public lynchings by whites of African Americans, part of numerous efforts to suppress them during a time of high tensions as whites struggled for dominance. It was part of a program of intimidation and racial terrorism, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcadia, Louisiana
Arcadia is a town in, and the parish seat of, Bienville Parish in northern Louisiana, United States. The population was 2,919 at the 2010 census. Arcadia has the highest elevation of any incorporated municipality in Louisiana. Arcadia's name commemorates the Ancient Greek region of Arcadia. History In 1934, bank robbers Bonnie and Clyde were killed near Arcadia in a shootout. Their bodies were brought for embalming to a furniture store in Arcadia which also served as a funeral parlor. Enormous crowds of onlookers descended upon the city when news of the pair's deaths there became public. Arcadia has been a center of the poultry industry, with up to 300 independent growers for years supplying the local feed mill operated by poultry company Pilgrim's Pride. In 2009 the company, facing bankruptcy, announced that it would close most of its Louisiana operations, including plants in Arcadia, Athens, Choudrant, and Farmerville; these operations were estimated to have provided a com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bossier City, Louisiana
Bossier City ( ) is a city in Bossier Parish in the northwestern region of the U.S. state of Louisiana in the United States. It is the second most populous city in the Shreveport–Bossier City metropolitan statistical area. In 2020, it had a total population of 62,701 up from 61,315 in 2010. Located on the eastern bank of the Red River, Bossier City is closely tied economically and socially to its larger sister city Shreveport on the opposite bank, though the city maintains its own community college (Bossier Parish Community College). Bossier City is the largest city in Louisiana that is not the parish seat. History 19th century In the 1830s, the area of Bossier City was the plantation Elysian Grove, which was purchased by James Cane and his second wife Mary Doal Cilley Bennett Cane. James had come to the area with his first wife Rebecca Bennett, and her brother, William Bennett, and his wife Mary Doal Cilley Bennett. They ran a trading post across the river on what was th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nacogdoches, Texas
Nacogdoches ( ) is a small city in East Texas and the county seat of Nacogdoches County, Texas, United States. The 2020 U.S. census recorded the city's population at 32,147. Nacogdoches is a sister city of the smaller, similarly named Natchitoches, Louisiana, the third-largest city in the southern Ark-La-Tex. Stephen F. Austin State University is located in Nacogdoches. History Early years Local promotional literature from the Nacogdoches Convention and Visitors Bureau describes Nacogdoches as "The Oldest Town in Texas". Evidence of settlement at the same site dates back to 10,000 years ago. It is near or on the site of Nevantin, the primary village of the Nacogdoche tribe of Caddo Indians. Nacogdoches remained a Caddo Indian settlement until the early 19th century. In 1716, Spain established a mission there, Misión Nuestra Señora de Guadalupe. That was the first European construction in the area. The "town" of Nacogdoches got started after the French had vacated the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortwave (meteorology)
A shortwave or shortwave trough is an embedded kink in the trough / ridge pattern. Its length scale is much smaller than that of and is embedded within longwaves, which are responsible for the largest scale (synoptic scale) weather systems. Shortwaves may be contained within or found ahead of longwaves and range from the mesoscale to the synoptic scale. Shortwaves are most frequently caused by either a cold pool or an upper level front. Shortwaves are commonly referred to as a vorticity maximum. Corresponding weather and effects Shortwaves are often associated with warm air advection (WAA) or cold air advection (CAA), which influence temperature. Due to the way they move the air around them and the way air moves away from them, shortwaves produce positive curvature vorticity and positive shear vorticity, respectively. Ahead of a shortwave there is large-scale lift due to divergence from positive vorticity advection (PVA). This lift often causes precipitation. In a capped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dew Point
The dew point is the temperature to which air must be cooled to become saturated with water vapor, assuming constant air pressure and water content. When cooled below the dew point, moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew. When this occurs via contact with a colder surface, dew will form on that surface. The dew point is affected by humidity. When there is more moisture in the air, the dew point is higher. When the temperature is below the freezing point of water, the dew point is called the frost point, as frost is formed via deposition rather than condensation. In liquids, the analog to the dew point is the cloud point. Humidity If all the other factors influencing humidity remain constant, at ground level the relative humidity rises as the temperature falls; this is because less vapor is needed to saturate the air. In normal conditions, the dew point temperature will not be greater than the air temperature, sinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Panhandle
The Texas Panhandle is a region of the U.S. state of Texas consisting of the northernmost 26 counties in the state. The panhandle is a square-shaped area bordered by New Mexico to the west and Oklahoma to the north and east. It is adjacent to the Oklahoma Panhandle. ''The Handbook of Texas'' defines the southern border of Swisher County as the southern boundary of the Texas Panhandle region. Its land area is , or nearly 10% of the state's total. The Texas Panhandle is slightly larger in size than the US state of West Virginia. An additional is covered by water. Its population as of the 2010 census was 427,927 residents, or 1.7% of the state's total population. As of the 2010 census, the population density for the region was . However, more than 72% of the Panhandle's residents live in the Amarillo Metropolitan Area, which is the largest and fastest-growing urban area in the region. The Panhandle is distinct from North Texas, which is further south and east. West of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
