Warm fronts are
boundaries of slow-moving air masses that replace masses of colder air ahead of them
. Warm fronts typically travel between 10 and 25 miles per hour and contain warm, humid air. As the warm air is lifted, the temperature drops and condensation occurs, forming clouds.
What are the characteristics of warm and cold fronts?
With a warm front, boundary between warm and cold air is more gradual than that of a cold front, which
allows warm air to slowly rise and clouds to spread out into gloomy, overcast stratus clouds
. Precipitation ahead of a warm front typically forms into a large shield of steady rain or snow.
What weather conditions are associated with a warm front?
Warm Front
Warm fronts often bring
stormy weather
as the warm air mass at the surface rises above the cool air mass, making clouds and storms. Warm fronts move more slowly than cold fronts because it is more difficult for the warm air to push the cold, dense air across the Earth’s surface.
What are the characteristics of each front?
The type of front depends on both the direction in which the air mass is moving and the characteristics of the air mass. There are four types of fronts that will be described below:
cold front, warm front, stationary front
, and occluded front.
What are 3 characteristics of a warm front?
| Weather phenomenon While the front is passing | Temperature Warming suddenly | Atmospheric pressure Leveling off | Winds Variable | Precipitation Persistent rain, usually moderate with some lighter periods and some heavier bursts. In winter, snow may turn to rain. |
|---|
What happens after a warm front?
After the
warm front passes conditions completely reverse
. The atmospheric pressure rises slightly before falling. The temperatures are warmer then they level off. The winds in the northern hemisphere blow south-southwest in the northern hemisphere and north-northwest in the southern hemisphere.
What are the first signs of an approaching warm front?
The first signs of an approaching warm front are
the appearance of high, thin, wispy cirrus clouds
. As the front nears, the clouds will become lower in the sky and be thicker, since there will be more air at lower elevations from which to condense clouds.
What is the difference between warm and cold fronts?
A warm weather front is defined as the changeover region where a warm air mass is replacing a
cold air
mass. … If colder air is replacing warmer air, it is a cold front, if warmer air is replacing cold air, then it is a warm front.
What does a warm front look like?
Symbolically, a warm front is represented by
a solid line with semicircles pointing towards the colder air and in the direction of movement
. On colored weather maps, a warm front is drawn with a solid red line. There is typically a noticeable temperature change from one side of the warm front to the other.
What type of front is still and not moving?
Stationary Front
: a front that is not moving. When a warm or cold front stops moving, it becomes a stationary front.
What is the symbol for a warm front?
A red line with half-circles on one side
signifies a warm front. A warm front shows the leading edge of warmer air trying to replace a colder air mass. The half circles always point in the direction that the front (and the warmer air) is moving.
What type of weather can occur at an occluded front?
An Occluded Front forms when a warm air mass gets caught between two cold air masses. … The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Such fronts can bring
strong winds and heavy precipitation
. Occluded fronts usually form around mature low pressure areas.
How does air move in general?
Air in the atmosphere moves around the world in a pattern called global atmospheric circulation. … When
the air cools, it drops back to the ground, flows back towards the Equator, and warm again
. The, now, warmed air rises again, and the pattern repeats. This pattern, known as convection, happens on a global scale.
What is the definition of a front?
: the
forward part or surface of something
: the part of something that is seen first. : a place, position, or area that is most forward or is directly ahead. : the part of your body that faces forward and includes your face and chest. front. verb.
What type of front is associated with severe weather?
Cold fronts
occur when warm air is pushed up into the atmosphere by colder air at the ground. These fronts tend to move faster than the other types of fronts and are associated with the most violent types of weather such as severe and super cell thunderstorms, although any type of front can produce these same storms.
When a weather front passes there is often a?
When a weather front passes, there is often a ___________in
wind
__________as well as changes in temperature. Cold Fronts occur when a colder air mass __________a warmer air mass. This can create a short ________of heavy rain and strong____________. Warm Fronts move slower than cold air__________.
