Stationary front
- what clouds form in a warm front
- what clouds form in a occluded front
- what clouds occur in a warm front
- what clouds occur in a occluded front
How does a warm front form?!
Warm front
Boundary of advancing mass of warm air
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 of an isotherm gradient.
Warm fronts lie within broader troughs of low pressure than cold fronts, and move more slowly than the cold fronts which usually follow because cold air is denser and less easy to remove from the Earth's surface.[1] This also forces temperature differences across warm fronts to be broader in scale.
Warm front symbol
Clouds ahead of the warm front are mostly stratiform, and rainfall generally increases as the front approaches. Fog can also occur preceding a warm frontal passage. 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.
On weather maps, the surface location of a warm front is marked with a red line of semicircles pointing in the direction of travel.[1]