A warm front is a density discontinuity located at the leading edge of a homogeneous warm air mass, and is typically located on the equator-facing edge...

Cold fronts and cold occlusions move faster than warm fronts and warm occlusions because the dense air behind them can lift as well as push the warmer air...

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...

a warm front near a cyclone, such that the warm air is separated (occluded) from the cyclone center at the surface. The point where the warm front becomes...

A pseudo-warm front is a boundary between the in-flow region and the forward-flank downdraft of a supercell. It can either be stationary or move in a northeasterly...

Cold fronts develop where the cold air mass is advancing, warm fronts where the warm air is advancing, and a stationary front is not moving. Fronts classically...

spikes pointing to the warmer air mass and red domes facing the colder air mass. A stationary front may form when a cold or warm front slows down or grows...

side of the low, while warm air move towards the pole on the east side. A cold front appears on the west side, while a warm front forms on the east side...

Altostratus clouds usually predict the arrival of warm fronts. Once altostratus clouds associated with a warm front arrive, continuous rain or snow will usually...

throughout the warm sector. The Tri-State supercell formed in a highly favorable area just ahead of the triple point where the cold front, warm front, and dry...

the poleward portion of the cold front overtakes a section of the warm front, forcing a tongue, or trowal, of warm air aloft. Eventually, the cyclone...

Warm fronts occur where advancing warm air pushes out a previously extant cold air mass. The warm air overrides the cooler air and moves upward. Warm...

the SYNOP report. Nimbostratus occurs along a warm front or occluded front where the slowly rising warm air mass creates nimbostratus along with shallower...

Cirrocumulus appears almost exclusively with cirrus some way ahead of a warm front and is a reliable forecaster that the weather is about to change. When...

A temperature profile showing a warm layer above the ground is most likely to be found in advance of a warm front during the cold season, but can occasionally...

clouds are present. They are formed by warm, moist air being lifted slowly to a very high altitude. When a warm front approaches, cirrostratus clouds become...

localized around the distant warm front to the south. Despite the model projections and weather forecasts, the warm front moved north faster than anticipated...

concept of the warm conveyor belt, which transports warm and moist air just ahead of the cold front above the surface warm front. Polar front theory is attributed...

air is forced aloft at weather fronts and around centers of low pressure by a process called convergence. Warm fronts associated with extratropical cyclones...

north as Missouri. This created an anomalously large warm sector–the airmass behind a warm front and ahead of a dry line–for thunderstorms to develop...

or nitric acid. Cirrostratus clouds sometimes signal the approach of a warm front if they form after cirrus and spread from one area across the sky, and...

fronts. In the end, two types of fronts form: cold fronts and warm fronts. A cold front is a narrow line where temperature decreases rapidly. A warm front...

conjoined altocumulus perlucidus is sometimes found preceding a weakening warm front, where the altostratus is starting to fragment, resulting in patches of...

tropopause. These conditions commonly occur at the leading edge of a warm front. Because absolute humidity is low at such high altitudes, this genus tends...

move faster than warm fronts and warm occlusions. Mountains and warm bodies of water can slow the movement of fronts. When a front becomes stationary...

A temperature profile showing a warm layer above the ground is most likely to be found in advance of a warm front during the cold season, but can occasionally...

and warm-air advection. Derechos move rapidly in the direction of movement of their associated storms, similar to an outflow boundary (gust front), except...

District Council, and "Richmondshire" District Council. The Government Warm Front Scheme was re-launched in March 2011 under the UK Coalition Government...

intense precipitation bands in an otherwise stable region, such as in front of a warm front. The same phenomenon is also applicable to oceanography. An air...

cumuliform clouds to flatten and become cumulus humilis. In this case, a warm front could be approaching and rain is possible for the next 12 to 24 hours...