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Information about Warm Front

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Illustration of a warm front
A warm front is defined as the leading edge of a mass of warm air. Warm fronts move more slowly than the cold front which usually follows due to the fact that cold air is more dense, and harder to remove from the earth's surface. If the warm air mass is stable, clouds ahead of the warm front are mostly stratiform and rainfall gradually increases as the front approaches. At the front itself, the clouds can reach the surface as fog. Clearing and warming is usually rapid after frontal passage. If the warm air mass is unstable, thunderstorms may be embedded among the stratiform clouds ahead of the front, and after frontal passage, thundershowers may continue.

In the northern hemisphere a warm front usually causes a shift of wind from southeast to southwest and in the southern hemisphere from northeast to northwest.
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The warm front symbol: a line with semicircles pointing in the direction of the advancement of the front
On weather maps, the surface location of a warm front is marked with a red line of half circles pointing in the direction of travel.

See Also





a warm front may also last for days before rain occours. The warm front will start with very high, flat clouds, and then become lower and fluffier before it rains.
FOG can be an acronym for...
  • the tool "Flexible Object Generator"
  • the tool "Fragmented-Object Generator"
  • Fiber Optic Gulf - a submarine telecommunications cable linking the United Arab Emirates, Qatar, Bahrain, and Kuwait
  • Fibre optic gyroscope

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weather map is a tool used to display information quickly showing the analysis of various meteorological quantities at various levels of the atmosphere. Maps utilizing isotherms show probable location of weather fronts.
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Extratropical cyclones, sometimes called mid-latitude cyclones, are a group of cyclones defined as synoptic scale low pressure weather systems that occur in the middle latitudes of the Earth having neither tropical nor polar characteristics, and are connected with fronts and
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surface weather analysis is a special type of weather map which provides a view of weather elements over a geographical area at a specified time based on information from ground-based weather stations.
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weather front is a boundary between two masses of air of different densities, and is the principal cause of significant weather. In surface weather analyses, fronts are depicted using various colored lines and symbols.
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