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1991 Andover Tornado
In the afternoon of April 26, 1991, a large and devastating tornado moved through areas southeast of Wichita, Kansas, Wichita, located in the state of Kansas. The tornado killed seventeen, injured over two hundred others, and left an estimated $300 million worth of damages in its wake. The tornado first touched down near Clearwater, Kansas, Clearwater, moving northeast while retaining F0 and F1 intensity. The tornado rapidly intensified as it approached Haysville, Kansas, Haysville, reaching F3 intensity as it directly impacted the town. After leaving Haysville in ruins, the tornado struck several residential subdivisions in eastern Wichita, where four people were killed. The tornado then tracked across the McConnell Air Force Base, becoming violent shortly before hitting the tarmac. At this location, the tornado narrowly avoided striking ten Rockwell B-1 Lancers, two of which were equipped with Nuclear weapons of the United States, nuclear warheads. The tornado then strengthen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Time Zone
The North American Central Time Zone (CT) is a time zone in parts of Canada, the United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ..., Mexico, Central America, and a few Caribbean Islands, Caribbean islands. In parts of that zone (20 states in the US, three provinces or territories in Canada, and several border municipalities in Mexico), the Central Time Zone is affected by two time designations yearly: Central Standard Time (CST) is observed from the first Sunday in November to the second Sunday in March. It is UTC−06:00, six hours behind Coordinated Universal Time (UTC) and designated internationally as UTC−6. From the second Sunday in March to the first Sunday in November the same areas observe daylight saving time (DST), creating the designation of Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bar (unit)
The bar is a metric unit of pressure defined as 100,000 Pa (100 kPa), though not part of the International System of Units (SI). A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar). By the barometric formula, 1 bar is roughly the atmospheric pressure on Earth at an altitude of 111 metres at 15 °C. The bar and the millibar were introduced by the Norwegian meteorologist Vilhelm Bjerknes, who was a founder of the modern practice of weather forecasting, with the bar defined as one megadyne per square centimetre. The SI brochure, despite previously mentioning the bar, now omits any mention of it.. The bar has been legally recognised in countries of the European Union since 2004. British Standard BS 350:2004 ''Conversion Factors for Units''. The US National Institute of Standards and Technology (NIST) deprecates its use except for "limited use in meteorology" and lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Oklahoman
''The Oklahoman'' is the largest daily newspaper in Oklahoma, United States, and is the only regional daily that covers the Oklahoma City metropolitan area, Greater Oklahoma City area. The Alliance for Audited Media (formerly Audit Bureau Circulation) lists it as the 59th largest U.S. newspaper in circulation. ''The Oklahoman'' has been published by Gannett (formerly known as GateHouse Media) owned by Fortress Investment Group and its investor Softbank since October 1, 2018. On November 11, 2019, GateHouse Media and Gannett announced GateHouse Media would be acquiring Gannett and taking the Gannett name. The acquisition of Gannett was finalized on November 19, 2019. Copies are sold for $2 daily or $4 Sundays/Thanksgiving Day; prices are higher outside Oklahoma County, Oklahoma, Oklahoma County and adjacent counties. Ownership The Daily Oklahoman newspaper was founded in 1894 by Samuel W. Small. Small eventually lost the paper and it was owned by a bank who leased the paper to C ... [...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] |
Particularly Dangerous Situation
A PDS tornado watch issued on December 14, 2022. In weather forecasting in the United States, "particularly dangerous situation" (PDS) is the wording used by the National Weather Service and the Storm Prediction Center to convey special urgency in watch or warning messages for unusually extreme and life-threatening severe weather. It is used in the format "This is a particularly dangerous situation..." at the discretion of the issuing forecaster. A watch or warning bearing the phrase is referred to as a PDS watch or PDS warning. First used by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service, for tornado watches, the phrase was later applied to other severe weather watches and warnings by the agency's regional forecast offices. It is most commonly used for major tornado outbreaks or long-lived, extreme derecho events, and has been used for non-convective weather hazards such as exceptional flash flooding, or a wildfire. PDS watches an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capping Inversion
A capping inversion is an elevated inversion layer that caps a convective planetary boundary layer. The boundary layer is the part of the atmosphere which is closest to the ground. Normally, the sun heats the ground, which in turn heats the air just above it. Thermals form when this warm air rises into the cold air (warm air is less dense than cold air), a process called convection. A convective layer such as this has the potential for cloud formation, since condensation occurs as the warm air rises and cools. An inversion occurs when the normal temperature (warm air below, cold air above) profile is reversed, creating a stable configuration of dense, cold air sitting below lighter, warm air. An elevated inversion layer is thus a region of warm air above a region of cold air, but higher in the atmosphere (generally not touching the surface). A capping inversion occurs when there is a boundary layer with a normal temperature profile (warm air rising into cooler air) and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifted Index
The lifted index (LI) is the temperature difference between the environment Te(p) and an air parcel lifted adiabatically Tp(p) at a given pressure height in the troposphere (lowest layer where most weather occurs) of the atmosphere, usually 500 hPa ( mb). The temperature is measured in Celsius. When the value is positive, the atmosphere (at the respective height) is stable and when the value is negative, the atmosphere is unstable. Determining LI LI can be computed using computer algorithms but can also be determined graphically. To do this, generally, the parcel is lifted from the portion of the planetary boundary layer (PBL) that lies below the morning inversion. The air here should be about 60 to 65% RH, which is then lifted along the dry adiabat (see also adiabatic process) to the lifting condensation level (LCL), which is the intersection of that curve with the average mixing ratio in the boundary layer. Once the LCL is found, the parcel is lifted along the moist a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dewpoint
The dew point is the temperature the air needs to be cooled to (at constant pressure) in order to produce a relative humidity of 100%. This temperature depends on the pressure and water content of the air. When the air at a temperature above the dewpoint is cooled, its moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew. When this occurs through the air's contact with a colder surface, dew will form on that surface. The dew point is affected by the air's humidity. The more moisture the air contains, the higher its dew point. 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 the air's capacity to hold wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warm Front
Warm, WARM, or Warmth may refer to: * A somewhat high temperature; heat * Kindness Music Albums * ''Warm'' (Herb Alpert album), 1969 * ''Warm'' (Jeff Tweedy album), 2018 * ''Warm'' (Johnny Mathis album), 1958, and the title song * ''Warm'' (The Lettermen album), 1967, and the title song * ''Warmer'' (Jeff Tweedy album), 2019 * ''Warmer'' (Randy VanWarmer album), 1979 Songs * "Warm", by Ariana Grande from '' Eternal Sunshine Deluxe: Brighter Days Ahead'', 2025 * "Warm", by Charli XCX featuring Haim from '' Charli'', 2019 * "Warm", by Majid Jordan from '' Majid Jordan'', 2016 * "Warm", by Swans from '' The Great Annihilator'', 1995 * "Warmer", by Bea Miller from '' Chapter Two: Red'' and ''Aurora'', 2017 * "Warmth", by Bastille from Wild World, 2016 * "Warmth", by C418 from '' Minecraft - Volume Beta'', 2013 * "Warmth", by Janet Jackson from '' Damita Jo'', 2004 Other uses * ''Warm.'', taxonomic author abbreviation of Eugenius Warming (1841–1924), Danish botanist * WARM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
