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2019 Dayton Tornado
On the night of May 27, 2019, a large and destructive tornado struck Dayton, Ohio as well as the surrounding suburbs of Brookville, Trotwood, Northridge and Riverside, injuring 166 people and indirectly killing one person. Part of a larger severe weather outbreak, the tornado was the first of two EF4-rated tornadoes to touch down during the outbreak. It was the first EF4 tornado in Ohio since the tornado that struck Millbury in 2010. Along the tornado's path through Montgomery County, the tornado was on the ground for 32 minutes, reaching a peak width of at times, and causing an estimated total of $500 million (2019 USD) in damage. Meteorological synopsis On the morning of May 27, the Storm Prediction Center issued an enhanced risk of severe weather for eastern Iowa, Illinois, Indiana, southwestern Michigan, and western Ohio for significant tornadoes, large hail, and damaging wind gusts. Much of Ohio was initially excluded from the tornado risk, but was eventually includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Daylight Time
The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and the state of Quintana Roo in Mexico. * Eastern Standard Time (EST) is five hours behind Coordinated Universal Time ( UTC−05:00). Observed during standard time (late autumn/winter in the United States and Canada). * Eastern Daylight Time (EDT) is four hours behind Coordinated Universal Time ( UTC−04:00). Observed during daylight saving time (spring/summer/early autumn in the United States and Canada). On the second Sunday in March, at 2:00 a.m. EST, clocks are advanced to 3:00 a.m. EDT, creating a 23-hour day. On the first Sunday in November, at 2:00 a.m. EDT, clocks are moved back to 1:00 a.m. EST, which results in a 25-hour day. History The boundaries of the Eastern Time Zone have moved westward since the Interstate Commerce Commission (ICC) took over time-zone management from railroads in 1938 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michigan
Michigan ( ) is a peninsular U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest, Upper Midwestern United States. It shares water and land boundaries with Minnesota to the northwest, Wisconsin to the west, Indiana and Illinois to the southwest, Ohio to the southeast, and the Canadian Provinces and territories of Canada, province of Ontario to the east, northeast and north. With a population of 10.14 million and an area of , Michigan is the List of U.S. states and territories by population, 10th-largest state by population, the List of U.S. states and territories by area, 11th-largest by area, and the largest by total area east of the Mississippi River.''i.e.'', including water that is part of state territory. Georgia (U.S. state), Georgia is the largest state by land area alone east of the Mississippi and Michigan the second-largest. The state capital is Lansing, Michigan, Lansing, while its most populous city is Detroit. The Metro Detroit r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tornado Watch
A tornado watch ( SAME code: TOA) is a statement issued by weather forecasting agencies to advise the public that atmospheric conditions in a given region may lead to the development of tornadoes within (or near) the region over a period of several hours. In addition to the potential for tornado development, thunderstorms that develop within the watch area may contain large hail, straight-line winds, intense rainfall and/or flooding that pose a similar damage risk as the attendant tornado threat. A watch must not be confused with a tornado warning, and encourages the public to remain vigilant for the onset of severe weather, including possible tornadoes. A tornado watch does not mean a tornado has been observed or ''will'' occur, just that favorable conditions increase the likelihood of such storms happening, and may be issued several hours ahead of the formation or arrival of potentially tornadic thunderstorms. Definition A ''tornado watch'' indicates that atmospheric condit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesocyclone
A mesocyclone is a meso-gamma mesoscale (or storm scale) region of rotation ( vortex), typically around in diameter, most often noticed on radar within thunderstorms. In the Northern Hemisphere, it is usually located in the right rear flank (back edge with respect to direction of movement) of a supercell, or often on the eastern, or leading, flank of a high-precipitation variety of supercell. The area overlaid by a mesocyclone’s circulation may be several miles (km) wide, but substantially larger than any tornado that may develop within it, and it is within mesocyclones that intense tornadoes form. Description Mesocyclones are medium-scale vortices of rising and converging air that circulate around a vertical axis. They are most often associated with a local region of low-pressure. Their rotation is (usually) in the same direction as low pressure systems in a given hemisphere: counter-clockwise in the northern, and clockwise in the southern hemisphere, with the only o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jet Stream
Jet streams are fast flowing, narrow thermal wind, air currents in the Earth's Atmosphere of Earth, atmosphere. The main jet streams are located near the altitude of the tropopause and are westerly winds, flowing west to east around the globe. The northern hemisphere and the southern hemisphere each have a polar jet around their respective polar vortex at around above sea level and typically travelling at around although often considerably faster. Closer to the equator and somewhat higher and somewhat weaker is a subtropical jet. The northern polar jet flows over the middle to northern latitudes of North America, Europe, and Asia and their intervening oceans, while the southern hemisphere polar jet mostly circles Antarctica. Jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including opposite to the direction of the remainder of the jet. The El Niño–Southern Oscillation affects the location of the jet s ... [...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] |
Tornadogenesis
Tornadogenesis is the process by which a tornado forms. There are many types of tornadoes, varying in methods of formation. Despite ongoing scientific study and high-profile research projects such as VORTEX projects, VORTEX, tornadogenesis is a volatile process and the intricacies of many of the mechanisms of tornado formation are still poorly understood. A tornado is a violently rotating column of air in contact with the surface and a cumuliform cloud base. Tornado formation is caused by the stretching and aggregating/merging of environmental and/or storm-induced vorticity that tightens into an intense vortex. There are various ways this may come about and thus various forms and sub-forms of tornadoes. Although each tornado is unique, most kinds of tornadoes go through a life cycle of formation, maturation, and dissipation. The process by which a tornado dissipates or decays, occasionally conjured as tornadolysis, is of particular interest for study as is tornadogenesis, longev ... [...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] |
Wind Shear
Wind shear (; also written 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesoscale Convective System
A mesoscale convective system (MCS) is a complex of thunderstorms that becomes organized on a scale larger than the individual thunderstorms but smaller than extratropical cyclones, and normally persists for several hours or more. A mesoscale convective system's overall cloud and precipitation pattern may be round or linear in shape, and include weather systems such as tropical cyclones, squall lines, lake-effect snow events, polar lows, and mesoscale convective complexes (MCCs), and generally forms near weather fronts. The type that forms during the warm season over land has been noted across North and South America, Europe, and Asia, with a maximum in activity noted during the late afternoon and evening hours. Forms of MCS that develop within the tropics use either the Intertropical Convergence Zone (ITCZ) or monsoon troughs as a focus for their development, generally within the warm season between spring and fall. One exception is that of lake-effect snow bands, which form due ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atmospheric Instability
Atmospheric instability is a condition where the Earth's atmosphere is considered to be unstable and as a result local weather is highly variable through distance and time. Atmospheric instability encourages vertical motion, which is directly correlated to different types of weather systems and their severity. For example, under unstable conditions, a lifted air parcel, parcel of air will find cooler and denser surrounding air, making the parcel prone to further ascent, in a positive feedback loop. In meteorology, instability can be described by various indices such as the Bulk Richardson Number, lifted index, K-index (meteorology), K-index, convective available potential energy, convective available potential energy (CAPE), the Showalter, and the Vertical totals. These indices, as well as atmospheric instability itself, involve temperature changes through the troposphere with height, or lapse rate. Effects of atmospheric instability in moist atmospheres include thunderstorm d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
