Clouds - Revision history

Admin at 17:07, 11 March 2009

2009-03-11T17:07:43Z

← Older revision		Revision as of 11:07, 11 March 2009
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	== Classification of Clouds ==		== Classification of Clouds ==
	*<span id="cumulus">Cumulus clouds</span> - form in rising air currents and which relate to unstable air.		*<span id="cumulus">Cumulus clouds</span> - form in rising air currents and which relate to unstable air.
	*Stratus clouds - form in horizontal layers as moist air is cooled below its saturation point.		*<span id="stratus">Stratus clouds</span> - form in horizontal layers as moist air is cooled below its saturation point.
	*Nimbus clouds - clouds which precipitation falls from.		*Nimbus clouds - clouds which precipitation falls from.

Admin at 19:35, 10 February 2009

2009-02-10T19:35:22Z

← Older revision		Revision as of 13:35, 10 February 2009
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	== Classification of Clouds ==		== Classification of Clouds ==
	*Cumulus clouds - form in rising air currents and which relate to unstable air.		*<span id="cumulus">Cumulus clouds</span> - form in rising air currents and which relate to unstable air.
	*Stratus clouds - form in horizontal layers as moist air is cooled below its saturation point.		*Stratus clouds - form in horizontal layers as moist air is cooled below its saturation point.
	*Nimbus clouds - clouds which precipitation falls from.		*Nimbus clouds - clouds which precipitation falls from.

Admin at 20:06, 5 February 2009

2009-02-05T20:06:12Z

Admin: New page: == Classification of Clouds == Cumulus clouds - form in rising air currents and which relate to unstable air. Stratus clouds - form in horizontal layers as moist air is cooled below its ...

2009-02-05T20:04:13Z

New page: == Classification of Clouds == *Cumulus clouds - form in rising air currents and which relate to unstable air. *Stratus clouds - form in horizontal layers as moist air is cooled below its ...

New page

== Classification of Clouds ==
*Cumulus clouds - form in rising air currents and which relate to unstable air.
*Stratus clouds - form in horizontal layers as moist air is cooled below its saturation point.
*Nimbus clouds - clouds which precipitation falls from.

=== High Clouds ===
Cloud bases from 16 500' to 45 000' mostly composed of ice crystals.
*Cirrus (Ci) - very high, with thin wavy sprays of white cloud.
*Cirrocumulus (Cc) - Thin, cotton or flake like.
*Cirrostratus (Cs) - Very thin, high clouds that the sun or moon are visable through sometimes though of as a halo effect. Usually associated with an approaching warm front or occlusion meaning bad weather coming.

=== Middle Clouds ===
Cloud bases from 6 500' to 23 000' mostly composed of ice crystals or water droplets.
*Altocumulus (Ac) - Layer of patches of rounded masses of cloud.
*Altocumulus Castellanus (Acc) - Indicates instability, turbulence and shower activity. Can develop into cumulonimbus.
*Altostratus (As) - Thick veil of grey cloud covering the whole sky indicates the approach of a warm front and some light rain or snow. Icing is also a danger in this cloud.

=== Low Clouds ===
Cloud bases from surface to 6 500' and are composed of water droplets which may be supercooled.
*Stratus (St) - Cloud resembling fog but not resting on the ground. Drizzle is often present.
*Stratocumulus (Sc) - layer of patches of rounded masses. Found in high pressure areas in the winter with some precipitation.
*Nimbostratus (Ns) - Low layer of uniform dark grey cloud which can be more than 15 000' thick. Precipitation falls in the form of continuous rain or snow.

=== Clouds of Vertical Development ===
Cloud bases from as low as 1 500' composed of water droplets or ice crystals.
*Cumulus (Cu) - Thick rounded and lumpy with flat bases and rounded tops. Flight under these clouds is usually full of turbulence.
*Towering Cumulus (TCu) - Cumulus clouds formed into towering masses. Turbulence will be found under this cloud as well as heavy icing inside.
*Cumulonimbus (Cb) - Heavy masses of cumulus clouds with an anvil shaped summit meaning thunderstorms. Stay out of these clouds as violent vertical currents and hail exist inside. A line of cumulonimbus means cold front.

[[Category: Weather]]

← Older revision		Revision as of 14:06, 5 February 2009
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	*Altocumulus (Ac) - Layer of patches of rounded masses of cloud.		*Altocumulus (Ac) - Layer of patches of rounded masses of cloud.
	*Altocumulus Castellanus (Acc) - Indicates instability, turbulence and shower activity. Can develop into cumulonimbus.		*Altocumulus Castellanus (Acc) - Indicates instability, turbulence and shower activity. Can develop into cumulonimbus.
	*Altostratus (As) - Thick veil of grey cloud covering the whole sky indicates the approach of a warm front and some light rain or snow. Icing is also a danger in this cloud.		*Altostratus (As) - Thick veil of grey cloud covering the whole sky indicates the approach of a warm front and some light rain or snow. [[Icing]] is also a danger in this cloud.

	=== Low Clouds ===		=== Low Clouds ===
	Cloud bases from surface to 6 500' and are composed of water droplets which may be supercooled.		Cloud bases from surface to 6 500' and are composed of water droplets which may be supercooled.
	*Stratus (St) - Cloud resembling fog but not resting on the ground. Drizzle is often present.		*Stratus (St) - Cloud resembling [[fog]] but not resting on the ground. Drizzle is often present.
	*Stratocumulus (Sc) - layer of patches of rounded masses. Found in high pressure areas in the winter with some precipitation.		*Stratocumulus (Sc) - layer of patches of rounded masses. Found in high pressure areas in the winter with some precipitation.
	*Nimbostratus (Ns) - Low layer of uniform dark grey cloud which can be more than 15 000' thick. Precipitation falls in the form of continuous rain or snow.		*Nimbostratus (Ns) - Low layer of uniform dark grey cloud which can be more than 15 000' thick. Precipitation falls in the form of continuous rain or snow.
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	Cloud bases from as low as 1 500' composed of water droplets or ice crystals.		Cloud bases from as low as 1 500' composed of water droplets or ice crystals.
	*Cumulus (Cu) - Thick rounded and lumpy with flat bases and rounded tops. Flight under these clouds is usually full of turbulence.		*Cumulus (Cu) - Thick rounded and lumpy with flat bases and rounded tops. Flight under these clouds is usually full of turbulence.
	*Towering Cumulus (TCu) - Cumulus clouds formed into towering masses. Turbulence will be found under this cloud as well as heavy icing inside.		*Towering Cumulus (TCu) - Cumulus clouds formed into towering masses. Turbulence will be found under this cloud as well as heavy [[icing]] inside.
	*Cumulonimbus (Cb) - Heavy masses of cumulus clouds with an anvil shaped summit meaning thunderstorms. Stay out of these clouds as violent vertical currents and hail exist inside. A line of cumulonimbus means cold front.		*Cumulonimbus (Cb) - Heavy masses of cumulus clouds with an anvil shaped summit meaning thunderstorms. Stay out of these clouds as violent vertical currents and hail exist inside. A line of cumulonimbus means cold front.

	[[Category: Weather]]		[[Category: Weather]]

Clouds - Revision history

Admin at 17:07, 11 March 2009

Admin at 19:35, 10 February 2009

Admin at 20:06, 5 February 2009

Admin: New page: == Classification of Clouds == *Cumulus clouds - form in rising air currents and which relate to unstable air. *Stratus clouds - form in horizontal layers as moist air is cooled below its ...

Admin: New page: == Classification of Clouds == Cumulus clouds - form in rising air currents and which relate to unstable air. Stratus clouds - form in horizontal layers as moist air is cooled below its ...