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A weather map, also known as synoptic weather chart, displays various meteorological features across a particular area at a particular point in time and has various symbols which all have specific meanings. [1] Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes.
A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough of low pressure.It often forms behind an extratropical cyclone (to the west in the Northern Hemisphere, to the east in the Southern), at the leading edge of its cold air advection pattern—known as the cyclone's dry "conveyor belt" flow.
On weather maps, the surface position of the cold front is marked by a blue line with triangles pointing in the direction where cold air travels and it is placed at the leading edge of the cooler air mass. [2] Cold fronts often bring rain, and sometimes heavy thunderstorms as well. Cold fronts can produce sharper and more intense changes in ...
The following other wikis use this file: Usage on af.wikipedia.org Weerfront; Usage on ar.wikipedia.org جبهة باردة; Usage on ca.wikipedia.org
Maps show what to expect as the cold front arrives. Map of mid-January temperature outlook Map shows below-normal temperatures in the forecast for mid-January across much of the South and East.
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A cold front is diagrammed as spikes pointing to its direction of travel. A warm front is shown as semi-circles in a traditional weather map, also pointing to its direction of travel. An occluded front is a combination of those two signs: they are indicated on a weather map either by a purple line with alternating semicircles and triangles ...
The cold front was not expected to release its grip until Thursday, meaning hazardous road conditions won't be gone soon. The weather service message to residents was simple: "Do not travel.