What is precipitation? Precipitation is any form of moisture which falls to the earth. This includes rain, snow, hail and sleet. Precipitation occurs when water. Frontal rainfall happens where warm fronts meet cold fronts. The British Isles are Convectional rainfall is common where the sun heats the land near the sea. Convection occurs when the Earth’s surface, especially within a Convective rain and light precipitation are the result of.

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Air descends on the other side of the mountains.

Prevailing winds come from the south west carrying moisture from the Atlantic Ocean. The following examples show three different ways air is cooled causing rainfall. The warmer air is forced to rise and if conditions are right, and furthermore creates an effect of saturation, causing precipitation. If this process continues then rain will fall. The sun heats the ground and warm air rises. Where the air meets the warm air is cooled and water vapour condenses.

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It warms up and therefore becomes drier. Cold fronts are shown by a blue line with blue triangles. Clouds form and it rains.

British weather and climate

Orographic or relief rainfall is caused when masses of air are forced up the side of elevated land formations, such as large mountains often referred to as an upslope effect. Please Support Internet Geography If you’ve found the resources on this site useful please consider making a secure donation via PayPal to support the development of the site. When the land heats up, it warms the air above it. Precipitation can fall in either liquid or solid phases, or transition between them at the freezing level.


Moderate snow describes snowfall with visibility restrictions between. Convective precipitation occurs when air rises vertically through the temporarily self-sustaining mechanism of convection.

When the land warms up, it heats the air above it. Warm fronts occur where warm air pushes out a previously extant cold air mass.

Precipitation types

When classified according to the rate of precipitation, rain can be divided into categories. Archived from the original on Sorry, your blog cannot share posts by email.

By continuing to browse the site, you are agreeing to our use of cookies. Any moisture in the air e. Precipitation occurs when local air becomes saturated with water vapor, and can no longer maintain the level of water vapor in gaseous form. This type of rainfall is very common in tropical areas between the Tropic of Cancer and Tropic of Capricorn but also in areas such as South East England during warm sunny spells.

Windward sides face the east-to-northeast trade winds and receive much more rainfall; leeward sides are drier and sunnier, with less rain and less cloud cover. Convectional rainfall When the land warms up, it heats rrainfall air above it. When the condensation point is reached large cumulonimbus clouds are formed.

Precipitation types – Wikipedia

Eainfall rain is the same. As the air rises it cools and water vapour condenses to form clouds. In the UK, depressions often follow a similar pattern.


From Wikipedia, the free encyclopedia. Online Activities [Online activities]: Air cools and condenses.

Precipitation duration is often shorter and generally more intense than that which occurs ahead of warm fronts. Precipitation occurs when water vapour cools. An area of warm air meets and area rwinfall cold air. If you’ve found the resources on this page useful please consider making a secure donation via PayPal to support the development of the site. What is population distribution?

Orographic precipitation occurs when moist rainfal is forced upwards over rising terrain, such as a mountain. Convective and stratiform rainfall in the tropics. Heavy rain describes rainfall with a precipitation rate above 7. What factors affect population density? Typhoon Haiyan Case Study. As the air rises it cools and condenses. Cold fronts occur when a mass of cooler air dislodges a mass of warm air. In meteorologythe various types of precipitation often include the character or phase of the precipitation which is falling to ground level.

The British Isles are affected by a number of convectiomal air masses. Related Topics Use the images below to explore related GeoTopics.

Light rain describes rainfall which falls at a rate of between a trace and 2.