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If you are interested in clouds or thunderstorms, UK climate or weather extremes, this series of factsheets clearly describes and illustrates the processes involved.

These factsheets clearly describe and illustrate the processes involved in global weather and climate, providing the most up-to-date answers and information. 1. Clouds The current classification of clouds is based upon those originated by Luke Howard (1772-1864), a London pharmacist and amateur

AS Altostratus ASR Altimeter setting region ATD Arrival Time Difference AUG August AUTO Automated METAR (produced with CAA approval outside normal operational hours) Return to top B BASE Cloud base BCFG Fog patches BECMG Becoming BKN Broken (5 to 7 oktas) BL Blowing BLW Below BR Mist BTN Between

rain to Caithness and eastern Sutherland, falling snow above 500-600m at first, rising to 800-900m by evening. Staying mostly dry for the more sheltered areas around the west coast with chance of a few bright spells. Feeling cold with east to southeast winds gusting 40-50mph. Chance of cloud-free hill

, particularly over coastal areas and hills where it brings low clouds, drizzle and local hill fog. Judging from the number of isobars the gradient wind does not seem to be an issue but the complexity of the frontal system over the Atlantic indicates that conditions will deteriorate quickly

gusting 40-50mph. Chance of cloud-free hill tops above 800m: Little chance in east, 25% west of A9. Low cloud and visibility: Widespread cloud down to 300-500m and poor visibilities in hill fog and outbreaks of snow. Small chance of limited breaks west of the A9. Check our weather forecast every day

History Version Issue Date Change Description Owner V1 April 2019 New document D Hardy V2 July 2021 Replacement of AIRMET with GAMETs D Hardy V3 May 2022 Removal of EURO Forecast precip rate, Forecast precip type, Forecast vis & Forecast total cloud weather may layers D Hardy © Crown copyright 2021

to the formation of cumulonimbus clouds, towering, dense clouds capable of producing heavy rain, hail, and lightning. Lightning is a massive electrical discharge caused by the separation of positive and negative charges within a storm cloud. As the storm develops, ice particles and hailstones collide

. Breezy conditions will persist, and temperatures will hover near or slightly below seasonal averages. Monday night will see a shift to drier conditions for many, though showers in the north will drift southward, concentrating along North Sea coastal counties. Cloud cover will increase in the far

through for western areas for the afternoon. Chance of cloud-free hill tops above 600m: 30% in east, 50% in west Low Cloud and visibility: Good or very good, becoming moderate or poor in rain, very poor within cloud with bases quiet extensive from 500m in the east Check our weather forecast every day

Weather Forecasting  - helping you to understand the facts. The Met Office holds the nation's weather and climate records. Our UK climate and weather statistics will give you summaries, climate figures and much more. Latest Met Office guides and information on climate change.   Cloud Types