Search results (941)

Page 1 of 95

Web results


Arcus cloud

Arcus clouds are low-level, wide ranging clouds typically associated with powerful storm clouds and thunderstorms.

Height of base:  Up to 6500 ft. Shape: Wedge shaped, or a long rolling horizontal column. Latin:  Arcus = Arch. Precipitation: None directly, but heavy showers in the vicinity from cumulonimbus clouds. What are arcus clouds? Arcus clouds are spectacular low-level, long and thin clouds associated

Cloud spotting guide

Use our cloud spotting guide and video to help identify different types of clouds in the sky.

To assist with identifying different clouds while cloud spotting we've created this useful infographic. Feel free to share and use on your own website or blog but please include a link back to the Met Office. You can also download a printable version of the cloud spotting guide. Click on the clouds

Make a cloud in a glass

Make a cloud in a glass with our experiment.

the inside carefully. You should see a 'cloud' form near the top of the glass. In the real world, clouds form when warm, moist air, like that in your glass, is cooled (your ice). When it is cooled it condenses into tiny water droplets, which appear as clouds.


Kelvin-Helmholtz cloud

An extremely rare phenomenon, where a cloud produces a billowing wave pattern. They occur when there is a strong vertical shear between two air streams, causing winds to blow faster at the upper level than at the lower levels.

Height of base:  Can be any height, but usually at higher levels. Shape: A repeating breaking wave pattern. Latin:  These clouds are named after Hermann von Helmholtz and William Thomson, Lord Kelvin, physicists who studied turbulent airflow. There is no Latin etymology. Precipitation:  None. What


Cloud names and classifications

The classification of clouds into types was first proposed by Luke Howard in 1802 and we largely use the same system today. This splits clouds into three main types - stratus, cumulus and cirrus.

Clouds are continually changing and appear in an infinite variety of forms. The classification of clouds is based on a book written by Luke Howard, a London pharmacist and amateur meteorologist, in 1803. His book, The Modifications of Clouds, named the various cloud structures he had studied


sunny intervals, but scattered showers affected some southern and central areas in the a ernoon. The 14th was mostly dry, sunny and very warm in the south and east but cloudier with some rain in the north, with isolated heavy thundery bursts, and cloud and rain became more widespread on the 15th. A er


What to do if you have a frozen or burst pipe

Sometimes pipes freezing and thawing can cause them to burst. Find out what to do to get up and running again.

a burst pipe Sometimes pipes freezing and thawing can cause them to burst. If this happens, turn off the mains water supply immediately by using the stoptap. This will stop any more water getting into the water pipes. If the burst pipe is on the main water system the rush of water will stop after


How we measure cloud

Take a look at how we observe the type, amount and height of clouds.

The large scale distribution of cloud is best measured from space in either the visible or infra red part of the spectrum. This satellite imagery is revealing in many ways, but it has its limitations for the measurement of cloud, in particular: Extensive high cloud can mask important features

Cloud physics and aerosol research

Studying aerosol and cloud microphysical processes using airborne observations.

Aerosol are small particles that have a wide range of important impacts on the atmosphere; they interact with solar and terrestrial radiation to perturb the Earth's energy budget; they play a key role in determining cloud properties; and in high concentrations they degrade air quality

Page navigation