Cumulus clouds commonly indicate fair weather. … As the warm air rises from the earth—often the air is rising from a patch of bare ground heated by the sun–it cools and the vapor in the rising air condenses into the visible cumulus cloud.
Why do cumulus clouds bring fair weather?
Fair Weather Cumulus Cloud Formation
Fair weather cumulus clouds have flat bases and usually don’t grow very tall. That’s because the atmosphere doesn’t have enough convection (lift) to bring the tops up very high. Fair weather cumulus clouds are common on warm days.
Are cumulus clouds fair?
Cumulus humilis are cumuliform clouds with little vertical extent, common in the summer, that are often referred to as “fair weather cumulus”. If they develop into cumulus mediocris or cumulus congestus, thunderstorms could form later in the day.
Cumulus humilis cloud.
|Cumulus humilis clouds|
|Classification||Family C (Low-level)|
Which cloud is known as fair weather cloud?
This warmed air rises by convection and forms Cumulus. These “fair weather” clouds look like cotton wool. If you look at a sky filled with cumulus, you may notice they have flat bases, which all lie at the same level.
How do fair weather cumulus clouds form?
Fair weather cumulus are fueled by buoyant bubbles of air, or thermals, that rise upward from the earth’s surface. As they rise, the water vapor within cools and condenses forming cloud droplets.
What is unique about cumulus clouds?
Cumulus clouds are detached, individual, cauliflower-shaped clouds usually spotted in fair weather conditions. The tops of these clouds are mostly brilliant white tufts when lit by the Sun, although their base is usually relatively dark.
Why are the fair weather cumulus clouds bobbing on top with blue sky above?
The water vapor that is in the air came from the evaporation of liquid water or sublimation of ice in or on the surface. … The haze extends all the way up to the lower parts of the fair weather cumulus clouds, which seem to be bobbing on top of the haze, like Styrofoam peanuts bobbing on top of a pool of water.
What is the meaning of cumulus clouds?
Definition of cumulus
1 : heap, accumulation. 2 [New Latin, from Latin] : a dense puffy cloud form having a flat base and rounded outlines often piled up like a mountain — see cloud illustration.
What are fair weather cumulus made of?
Fair weather cumulus have the appearance of floating cotton with a flat base and distinct outlines, and colors range from white to light gray. Fair weather cumulus have a lifetime of anywhere from 5-40 minutes and show only slight vertical growth, with the tops designating the limit of the rising air.
What is the meaning of fair weather?
Definitions of fair weather. moderate weather; suitable for outdoor activities. synonyms: sunshine, temperateness. type of: atmospheric condition, conditions, weather, weather condition. the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation.
Is Cumulus weather good?
Cumulus humilis clouds usually indicate fair weather. Cumulus mediocris clouds are similar, except that they have some vertical development, which implies that they can grow into cumulus congestus or even cumulonimbus clouds, which can produce heavy rain, lightning, severe winds, hail, and even tornadoes.
Which of the following best describes cumulus clouds?
Cumulus clouds are puffy clouds that sometimes look like pieces of floating cotton. The base of each cloud is often flat and may be only 1000 meters (3300 feet) above the ground. … These clouds grow upward, and they can develop into a giant cumulonimbus, which is a thunderstorm cloud.
Where do cumulus clouds form in the atmosphere?
Cumulus clouds form in areas where the ground is very warm. The warm air on the ground speeds the evaporation of surface water. That moisture gets pulled up into the atmosphere by an uplift. The warm air carrying moisture enters cooler temperatures higher in the atmosphere.
Do cumulonimbus clouds bring thunderstorms?
When a cumulonimbus cloud forms faster than expected, they not only produce thunderstorms, but they are the same clouds that can result in those loud and rumbling thunder and lightning. Suppose a cumulonimbus comes into contact or formation with another cloud, specifically a cumulus congestus.
Can cumulus clouds produce rain and hail?
Towering cumulus, or cumulus congestus, may generate rain; they may also develop into the even larger, more energetic cumulonimbus. Cumulonimbus clouds, sometimes called “thunderheads,” are associated with thunderstorms, lightning and intense, heavy rains as well as hail.