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in a number of different ways including from satellite data, by radar and by LiDAR (Light Detection and Ranging). The Met Office uses an instrument called LiDAR to measure ash clouds. LiDAR works by sending pulses of laser light through the atmosphere, which is scattered by volcanic ash particles. Some

#WeatherAware⚠️ pic.twitter.com/u02C9Z4vtN — Met Office (@metoffice) December 24, 2025   Christmas Day is expected to be mostly dry with variable amounts of cloud and sunny spells in places. A few light showers are possible, particularly near the coast of Devon and Cornwall, which may be wintry

- many should see a decent amount of sunshine. “With the exception of the southeast at first, where it will be rather cool to start the weekend, temperatures are generally unremarkable for the time of year, close to or a little above average. However, it will feel a little warmer with light winds

and sunny spells in places. A few light showers are possible, particularly along southwestern coasts later in the day. Daytime temperatures could be as low as 2°C but will feel colder in the strong easterly breeze. Paul Gundersen, Chief Meteorologist at the Met Office, said: “The question we get most

spots out of which the clouds evolve (top left). The clouds in their early stages of formation are depicted in the photograph at top right. When completely formed, the clouds have clear­cut horizontal bases and rounded tops (centre photographs). In this stage they are called ‘fair weather’ cumulus

settled conditions across much of the UK, with most areas enjoying dry weather and sunny spells. Temperatures will be close to the seasonal average, though it will feel pleasantly warm in the sunshine, especially where winds remain light. Eastern and southeastern England may see more in the way of cloud

'Eight kilometres' 9999 = 10 km or more; 0000 = less than 50 metres -SHRA 9 Significant changes FEW005 SCT010 SCTO18CB BKN025 'Light rain showers' 'Few at 500 feet, scattered at one thousand feet, scattered cumulonimbus at one thousand eight hundred feet. Broken at two thousand five hundred feet

Thursday will begin with some early fog patches across western areas, but these will soon lift to leave a largely sunny day across much of England and Wales. Further north, Northern Ireland and particularly Scotland will see more in the way of cloud, with outbreaks of mainly light rain and drizzle

, where outbreaks of rain and drizzle are expected. Some rain may also affect parts of Wales and the southwest for a time. Elsewhere, cloud cover will be more variable, with a few isolated showers breaking out later in the day. While most of these will be light, there is a low risk that some could

Governmental involvement. 1. RETURNS, REGISTERS, LOGS AND SUMMARIES — COLLATED DATA  Daily Registers  Climatological Returns  Lustrum forms  Ship, light vessel and light house logs Rainfall cards  Ten year rainfall books Daily Weather Summaries  Monthly Weather Summaries  British Rainfall  2. PRIVATE WEATHER DIARIES 3. AUTOGRAPHIC RECORDS 4. CHARTS 5. FORECAST INFORMATION