Search results (1,841)

who adopt a more conservative approach. Unlike the SQI more than one category threshold is used by the GSS (see table 1). The Met Office assess all the TAF cloud base and visibility categories defined by ICAO. At the time of writing, the following categories are used for TAF assessment: Surface

, it cools and forms a cloud that sits at each crest of the wave. This cloud has a unique lens-shaped appearance, sometimes resembling a stack of plates and has even been mistaken for a UFO! Lee waves can produce specific hazards, such as Rotors. These are turbulent rotating winds confined beneath a wave

Areas of expertise Orographic precipitation Temperature variations in complex terrain Mountain waves Cloud thermodynamics Publications by Samantha Smith Current activities Samantha is a senior scientist in the orography group.  The current focus of Samantha's work is orographic precipitation

the greatest impacts of climate change, while weather modification is usually taken to refer to those actions, such as cloud-seeding, to alter the weather in local areas across short time scales. There is misinformation on social media suggesting the condensation trails (contrails) from high-altitude

. Through the morning and into the afternoon, the cloud will build once again. There will be showers in some places, but elsewhere things stay dry, cloudy and rather cool. After a chilly, but mostly fine start, cloud will bubble up during Wednesday morning 🌥️☁️ Showers mainly affecting areas exposed

in the real world.   By bringing together global experts in weather and climate model development, the Weather and Climate Science for Service Partnership (WCSSP) Programme has made significant advancements to global modelling capability.   Advancing the simulation of clouds to improve rainfall

 weather sayings and lore When halo rings Moon or Sun, rain's approaching on the run When a ring appears around the Moon or Sun, sometimes referred to as haloes, this suggests rainfall may be approaching. The halo is caused by ice crystals formed in high clouds. These ice crystals then refract

warnings UK Storm Centre Seasonal advice Maps & charts Maps & charts UK forecast UK weather map Cloud cover map Precipitation map Lightning map Rainfall map Temperature map Wind map Wind gust map Surface pressure charts All countries Climate Climate Climate explained What is climate change? Causes

-hours • 6-hour intervals for forecasts valid from 54- hours through 120 hours. Note: Grid point forecasts of turbulence, icing, and cumulonimbus clouds will be provided through 48-hours. Current WAFS grid point forecasts have a temporal resolution of 3-hour intervals from 6-hours through 36-hours

north. Any local mist or fog soon cleared on the 6th, then it was fine but with cloud increasing from the west, and rain reached the north by late morning, spreading south and east into the Midlands during the afternoon, and parts of the south-west and East Anglia by evening. The 7th was brightest