The leading edge of a warm air mass. Warm fronts are usually associated with temperature rises, cloudy and wet weather. Clouds in a warm front are generally layered, and less convection (thunderstorm activity) is seen along warm fronts, as compared to cold fronts.
Transition zone in which warm air advances on a cooler airmass. Depicted on weather maps by a red line with half-circles.
A warm front is the boundary where warm air meets cold air at the Earth's surface, rising up and over the colder denser air. As the warm air rises it forms clouds and precipitation.
A front in which warm air rises slowly over cooler air in the atmosphere.
A transition zone in the atmosphere where an advancing warm air mass displaces a cold air mass.
The back edge of a retreating area of cold air. Warm air will overrun and eventually replace the cold air mass.
A front along which an advancing mass of warm air rises over a mass of cold air. A front is the area of contact between air masses.
Boundary between an advancing warm air mass and the cooler one it is replacing. Because warm air is less dense than cool air, an advancing warm front rises over a mass of cool air. Compare cold front.
A long, wedge-shaped boundary caused when a warmer advancing air mass slides over neighboring cooler air parcels.
A boundary separating cold and warm air masses at which the warm air is advancing.
A warm/cold air boundry with the warm air advancing.
the front of an advancing mass of warmer air
a mass of warm air displacing a mass of cold air, and vice versa
The boundary between a warm air mass that is moving toward a relatively colder air mass.
A front whose movement is such that the warmer air mass is replacing colder air mass.
A boundary between a warm air mass that is replacing a cooler air mass.
The place where an advancing warm air mass meets a cold air mass.
Boundary between advancing warm air and colder air which it is replacing. A warm frontal passage is usually accompanied by low clouds, steady rain, falling air pressure, and a gradual wind shift, generally from east or southeast to south or southwest.
A front that moves in such a way that warm air replaces cold air.
The transition zone where a warm air mass overtakes and replaces a colder air mass.
A warm-cold air boundary with warm air advancing.
The leading edge of a warm air mass advancing onto a cold air mass
the advancing edge of a warm air mass
The leading edge of a mass of warmer air that displaces a mass of colder air.
A boundary between a warm airmass that is replacing a cooler airmass.
A transition zone where a cold air mass retreats and is replaced by a warm air mass.
A front that moves in such a way that the warmer air replaces the colder air.
Any non-occluded front which moves in such a way that warm air replaces cold air.
The trailing edge of retreating cold air.
is air mass movement in which a mass of warm air advances into a territory covered by cold air
Any nonoccluded front, or portion thereof, that moves in such a way that warmer air replaces colder air. While some occluded fronts exhibit this characteristic, they are more properly termed warm occlusions.
A front which moves so that cold air is replaced by warm air.
The discontinuity at the forward edge of an advancing current of relatively warm air which is displacing a retreating colder air mass.
The leading edge of an advancing warm air mass that is replacing a retreating relatively colder air mass. Generally, with the passage of a warm front, the temperature and humidity increase, the pressure rises, and although the wind shifts (usually from the southwest to the northwest in the Northern Hemisphere), it is not as pronounced as with a cold frontal passage. Precipitation, in the form of rain, snow, or drizzle, is generally found ahead of the surface front, as well as convective showers and thunderstorms. Fog is common in the cold air ahead of the front. Although clearing usually occurs after passage, some conditions may produced fog in the warm air.