cold front thunderstorm

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• cold front — the zone separating two air masses, of which the cooler, denser mass is advancing and replacing the warmer. [1920 25] * * * ▪ meteorology       leading edge of an advancing mass of relatively cold air. In middle and higher latitudes of both… …   Universalium

• Thunderstorm — Electrical storm redirects here. For other uses, see Electrical storm (disambiguation). A typical thunderstorm A thunderstorm, also known as an electrical storm, a lightning storm, thundershower or simply a storm is a form of weather… …   Wikipedia

• thunderstorm — /thun deuhr stawrm /, n. a transient storm of lightning and thunder, usually with rain and gusty winds, sometimes with hail or snow, produced by cumulonimbus clouds. Also called electrical storm. [1645 55; THUNDER + STORM] * * * Violent, short… …   Universalium

• Cold wave — For the musical genre, see Coldwave. Part of the Nature series on Weather   Calendar seasons Spring  …   Wikipedia

• Weather front — A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. In surface weather analyses, fronts are depicted using various colored lines and symbols, depending on the… …   Wikipedia

• Pneumonia front — The term Pneumonia front, first coined by Milwaukee Weather Bureau Office in the 1960s,cite web last = Skilling first = Tom authorlink = coauthors = title = WGN Weather Center Blog work = publisher = date = May 27, 2008 url =… …   Wikipedia

• Air-mass thunderstorm — An Air mass thunderstorm, also called a garden variety thunderstorm, is a thunderstorm that is generally weak and usually not severe. These storms form in environments with low Convective Available Potential Energy (CAPE) values, low wind shear,… …   Wikipedia

• climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …   Universalium

• atmosphere — atmosphereless, adj. /at meuhs fear /, n., v., atmosphered, atmosphering. n. 1. the gaseous envelope surrounding the earth; the air. 2. this medium at a given place. 3. Astron. the gaseous envelope surrounding a heavenly body. 4. Chem. any… …   Universalium

• Disasters — ▪ 2009 Introduction Aviation       January 23, Poland. A Spanish built CASA transport plane carrying members of the Polish air force home from a conference on flight safety in Warsaw crashes near the town of Miroslawiec; all 20 aboard are killed …   Universalium

• Cyclogenesis — The initial frontal wave (or low pressure area) forms at the location of the red dot on the image. It is usually perpendicular (at a right angle) to the leaf like cloud formation (baroclinic leaf) seen on satellite during the early stage of… …   Wikipedia