Super Flexible Layout Builder

Tons of ElementsReal Drag and DropFullscreen OptionUndo/Redo functionallity

Types of cloud

Meteorologists classify clouds mainly by their height and shape, and often combine two descriptive terms into a complex name such as cirrostratus or stratocumulus.


High clouds (cloud base between 6 and 12 km) is called cirrus or is given the prefix cirro-.

Medium cloud (cloud base between 2 and 6 km) is given the prefix alto-.

Low cloud is usually classified by its shape, with no special prefix.


Clouds which are generally flat are described as stratus or are given the prefix strato-.

Clouds which are towering or puffy are described as cumulus or are given the prefix cumulo-.

Other words

Rain-producing clouds are described as nimbus or given the prefix nimbo-.

Clouds which appear to have been broken up by wind are given the prefix fracto-.

Cirrus: very high wisoy clouds formed of ice crystals

Cirrostratus:high sheets of thin ice cloud, often producing a halo effect around the sun or moon

Altostratus: layer if almost unbroken cloud at medium height

Altocumulus: fairly high ‘woolly’ looking cloud.

Stratus: almost continuous sheets of low cloud; often grey and associated with drizzle.

Cumulus: low, puffy clouds. Sometimes white and assoiated with fair weather but may grow upwards, produce showers and take on some of the characteristics of cumulonimbus.

Cumulonimbus: the classic ‘thundercloud’, with a fairly low cloud base but very high top (often flat): it may be up to 4-5 km from top to bottom. Its great height is caused by rising air currents inside the cloud, which allow large raindrops or hail to develop.

Nimbostratus: low, heavy looking shets of grey cloud, associated with continuous rain (e.g. at a warm front).

Fractostratus: very low, ragged clouds associated with wet and windy weather.

Stratocumulus: an apparently contradictory name applied to cumulus clouds that have spread out and combined to form a broken sheet, or to thin stratus that appears to be breaking up into separate clouds.


Onze zeilschool


Geweldige zeilcursus van Jim, hij kent de kneepjes van het vak en weet dit goed over te brengen!



Veelgestelde vragen

Lees meer


Handigheidjes en wetenswaardigheden

Lees meer


Overzicht van alle RYA trainingen

Lees meer